21121412004231 has 64 divisors (see below), whose sum is σ = 36127582903296. Its totient is φ = 10658553984000.

The previous prime is 21121412004221. The next prime is 21121412004283. The reversal of 21121412004231 is 13240021412112.

It is not a de Polignac number, because 21121412004231 - 2⁶ = 21121412004167 is a prime.

It is a super-2 number, since 2×21121412004231² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21121412004221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 7303966 + ... + 9777051.

It is an arithmetic number, because the mean of its divisors is an integer number (564493482864).

Almost surely, 2^{21121412004231} is an apocalyptic number.

21121412004231 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

21121412004231 is a deficient number, since it is larger than the sum of its proper divisors (15006170899065).

21121412004231 is a wasteful number, since it uses less digits than its factorization.

21121412004231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17081192.

The product of its (nonzero) digits is 768, while the sum is 24.

Adding to 21121412004231 its reverse (13240021412112), we get a palindrome (34361433416343).

The spelling of 21121412004231 in words is "twenty-one trillion, one hundred twenty-one billion, four hundred twelve million, four thousand, two hundred thirty-one".