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10022121331 = 61164297071
BaseRepresentation
bin10010101010101110…
…10110111101110011
3221212110101111212221
421111113112331303
5131011130340311
64334252501511
7503233424425
oct112527267563
927773344787
1010022121331
114283254102
121b3847a897
13c39464311
146b1080815
153d9ccc671
hex2555d6f73

10022121331 has 4 divisors (see below), whose sum is σ = 10186418464. Its totient is φ = 9857824200.

The previous prime is 10022121323. The next prime is 10022121359. The reversal of 10022121331 is 13312122001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13312122001 = 71059187339.

It is a cyclic number.

It is not a de Polignac number, because 10022121331 - 23 = 10022121323 is a prime.

It is a super-2 number, since 2×100221213312 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10022121371) 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, 82148475 + ... + 82148596.

It is an arithmetic number, because the mean of its divisors is an integer number (2546604616).

Almost surely, 210022121331 is an apocalyptic number.

10022121331 is a deficient number, since it is larger than the sum of its proper divisors (164297133).

10022121331 is an equidigital number, since it uses as much as digits as its factorization.

10022121331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164297132.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 10022121331 its reverse (13312122001), we get a palindrome (23334243332).

The spelling of 10022121331 in words is "ten billion, twenty-two million, one hundred twenty-one thousand, three hundred thirty-one".

Divisors: 1 61 164297071 10022121331