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1022211013 = 8911485517
BaseRepresentation
bin111100111011011…
…011001111000101
32122020110200220011
4330323123033011
54043141223023
6245233310221
734221436015
oct7473331705
92566420804
101022211013
1148501429a
12246405371
13133a15ab5
1499a8dc45
155eb1c50d
hex3cedb3c5

1022211013 has 4 divisors (see below), whose sum is σ = 1033696620. Its totient is φ = 1010725408.

The previous prime is 1022210989. The next prime is 1022211017. The reversal of 1022211013 is 3101122201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3101122201 = 17182418953.

It can be written as a sum of positive squares in 2 ways, for example, as 731269764 + 290941249 = 27042^2 + 17057^2 .

It is a cyclic number.

It is not a de Polignac number, because 1022211013 - 213 = 1022202821 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1022210984 and 1022211002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1022211017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5742670 + ... + 5742847.

It is an arithmetic number, because the mean of its divisors is an integer number (258424155).

Almost surely, 21022211013 is an apocalyptic number.

It is an amenable number.

1022211013 is a deficient number, since it is larger than the sum of its proper divisors (11485607).

1022211013 is an equidigital number, since it uses as much as digits as its factorization.

1022211013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11485606.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 1022211013 is about 31972.0348586073. The cubic root of 1022211013 is about 1007.3495231797.

Adding to 1022211013 its reverse (3101122201), we get a palindrome (4123333214).

The spelling of 1022211013 in words is "one billion, twenty-two million, two hundred eleven thousand, thirteen".

Divisors: 1 89 11485517 1022211013