10031221913838 has 32 divisors (see below), whose sum is σ = 20609992220832. Its totient is φ = 3252944640000.

The previous prime is 10031221913831. The next prime is 10031221913851. The reversal of 10031221913838 is 83831912213001.

It is a self number, because there is not a number n which added to its sum of digits gives 10031221913838.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10031221913831) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 57671413 + ... + 57845088.

It is an arithmetic number, because the mean of its divisors is an integer number (644062256901).

Almost surely, 2^{10031221913838} is an apocalyptic number.

10031221913838 is an abundant number, since it is smaller than the sum of its proper divisors (10578770306994).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

10031221913838 is a wasteful number, since it uses less digits than its factorization.

10031221913838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115516900.

The product of its (nonzero) digits is 62208, while the sum is 42.

The spelling of 10031221913838 in words is "ten trillion, thirty-one billion, two hundred twenty-one million, nine hundred thirteen thousand, eight hundred thirty-eight".