21114102231 has 12 divisors (see below), whose sum is σ = 30500130960. Its totient is φ = 14075152800.

The previous prime is 21114102173. The next prime is 21114102277. The reversal of 21114102231 is 13220141112.

21114102231 is a `hidden beast` number, since 21 + 1 + 1 + 410 + 2 + 231 = 666.

It is not a de Polignac number, because 21114102231 - 2²⁷ = 20979884503 is a prime.

It is a super-2 number, since 2×21114102231² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21114102931) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 88555 + ... + 223763.

It is an arithmetic number, because the mean of its divisors is an integer number (2541677580).

Almost surely, 2^21114102231 is an apocalyptic number.

21114102231 is a deficient number, since it is larger than the sum of its proper divisors (9386028729).

21114102231 is a wasteful number, since it uses less digits than its factorization.

21114102231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152566 (or 152563 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 21114102231 its reverse (13220141112), we get a palindrome (34334243343).

The spelling of 21114102231 in words is "twenty-one billion, one hundred fourteen million, one hundred two thousand, two hundred thirty-one".