21230111103212 has 72 divisors (see below), whose sum is σ = 41887908893376. Its totient is φ = 9336953364000.

The previous prime is 21230111103163. The next prime is 21230111103259.

21230111103212 is nontrivially palindromic in base 10.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 231797387 + ... + 231888957.

It is an arithmetic number, because the mean of its divisors is an integer number (581776512408).

Almost surely, 2^{21230111103212} is an apocalyptic number.

21230111103212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21230111103212 is a deficient number, since it is larger than the sum of its proper divisors (20657797790164).

21230111103212 is a wasteful number, since it uses less digits than its factorization.

21230111103212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97131 (or 97098 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 20.

It can be divided in two parts, 2123011 and 1103212, that added together give a palindrome (3226223).

The spelling of 21230111103212 in words is "twenty-one trillion, two hundred thirty billion, one hundred eleven million, one hundred three thousand, two hundred twelve".