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1022002213 = 1583645611
BaseRepresentation
bin111100111010101…
…000010000100101
32122020002002110211
4330322220100211
54043113032323
6245225015421
734216606201
oct7472502045
92566062424
101022002213
11484991431
12246324571
13133971a4b
1499a37b01
155eaca70d
hex3cea8425

1022002213 has 4 divisors (see below), whose sum is σ = 1022649408. Its totient is φ = 1021355020.

The previous prime is 1022002211. The next prime is 1022002231. The reversal of 1022002213 is 3122002201.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3122002201 = 13591229711.

It is a cyclic number.

It is not a de Polignac number, because 1022002213 - 21 = 1022002211 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1022002193 and 1022002202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1022002211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 321223 + ... + 324388.

It is an arithmetic number, because the mean of its divisors is an integer number (255662352).

Almost surely, 21022002213 is an apocalyptic number.

It is an amenable number.

1022002213 is a deficient number, since it is larger than the sum of its proper divisors (647195).

1022002213 is an equidigital number, since it uses as much as digits as its factorization.

1022002213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 647194.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 1022002213 is about 31968.7693382151. The cubic root of 1022002213 is about 1007.2809303938.

Adding to 1022002213 its reverse (3122002201), we get a palindrome (4144004414).

The spelling of 1022002213 in words is "one billion, twenty-two million, two thousand, two hundred thirteen".

Divisors: 1 1583 645611 1022002213