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1022121341 = 1805956599
BaseRepresentation
bin111100111011000…
…101010101111101
32122020022010212222
4330323011111331
54043130340331
6245231335125
734220613413
oct7473052575
92566263788
101022121341
11484a6298a
122463814a5
131339b4037
1499a692b3
155eb00b7b
hex3cec557d

1022121341 has 4 divisors (see below), whose sum is σ = 1022196000. Its totient is φ = 1022046684.

The previous prime is 1022121323. The next prime is 1022121383. The reversal of 1022121341 is 1431212201.

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 a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1431212201 = 1784188953.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-1022121341 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1022121391) 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, 10241 + ... + 46358.

It is an arithmetic number, because the mean of its divisors is an integer number (255549000).

Almost surely, 21022121341 is an apocalyptic number.

It is an amenable number.

1022121341 is a deficient number, since it is larger than the sum of its proper divisors (74659).

1022121341 is an equidigital number, since it uses as much as digits as its factorization.

1022121341 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74658.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 1022121341 is about 31970.6324773221. The cubic root of 1022121341 is about 1007.3200662193.

Adding to 1022121341 its reverse (1431212201), we get a palindrome (2453333542).

The spelling of 1022121341 in words is "one billion, twenty-two million, one hundred twenty-one thousand, three hundred forty-one".

Divisors: 1 18059 56599 1022121341