10001031113220 has 144 divisors (see below), whose sum is σ = 32577358258368. Its totient is φ = 2285769534720.

The previous prime is 10001031113201. The next prime is 10001031113239. The reversal of 10001031113220 is 2231113010001.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (10001031113201) and next prime (10001031113239).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 10001031113220.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 39065554 + ... + 39320726.

It is an arithmetic number, because the mean of its divisors is an integer number (226231654572).

Almost surely, 2^{10001031113220} is an apocalyptic number.

10001031113220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10001031113220 is an abundant number, since it is smaller than the sum of its proper divisors (22576327145148).

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

10001031113220 is a wasteful number, since it uses less digits than its factorization.

10001031113220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 268530 (or 268521 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 10001031113220 its reverse (2231113010001), we get a palindrome (12232144123221).

The spelling of 10001031113220 in words is "ten trillion, one billion, thirty-one million, one hundred thirteen thousand, two hundred twenty".