10031221004 has 36 divisors (see below), whose sum is σ = 20506237920. Its totient is φ = 4281086880.

The previous prime is 10031221001. The next prime is 10031221021. The reversal of 10031221004 is 40012213001.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a self number, because there is not a number n which added to its sum of digits gives 10031221004.

It is not an unprimeable number, because it can be changed into a prime (10031221001) 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, 60227 + ... + 153914.

It is an arithmetic number, because the mean of its divisors is an integer number (569617720).

Almost surely, 2^10031221004 is an apocalyptic number.

10031221004 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

10031221004 is an abundant number, since it is smaller than the sum of its proper divisors (10475016916).

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

10031221004 is a wasteful number, since it uses less digits than its factorization.

10031221004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214398 (or 214389 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 10031221004 its reverse (40012213001), we get a palindrome (50043434005).

The spelling of 10031221004 in words is "ten billion, thirty-one million, two hundred twenty-one thousand, four".