10312112421 has 24 divisors (see below), whose sum is σ = 16885333920. Its totient is φ = 6011918496.

The previous prime is 10312112413. The next prime is 10312112431. The reversal of 10312112421 is 12421121301.

10312112421 is a `hidden beast` number, since 1 + 0 + 31 + 211 + 2 + 421 = 666.

It is not a de Polignac number, because 10312112421 - 2³ = 10312112413 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10312112394 and 10312112403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10312112411) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2317191 + ... + 2321636.

It is an arithmetic number, because the mean of its divisors is an integer number (703555580).

Almost surely, 2^10312112421 is an apocalyptic number.

It is an amenable number.

10312112421 is a deficient number, since it is larger than the sum of its proper divisors (6573221499).

10312112421 is a wasteful number, since it uses less digits than its factorization.

10312112421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4638865 (or 4638862 counting only the distinct ones).

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

Adding to 10312112421 its reverse (12421121301), we get a palindrome (22733233722).

The spelling of 10312112421 in words is "ten billion, three hundred twelve million, one hundred twelve thousand, four hundred twenty-one".