101031220120 has 64 divisors (see below), whose sum is σ = 229054716000. Its totient is φ = 40104637440.

The previous prime is 101031220111. The next prime is 101031220237. The reversal of 101031220120 is 21022130101.

It is a self number, because there is not a number n which added to its sum of digits gives 101031220120.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7067380 + ... + 7081660.

Almost surely, 2^101031220120 is an apocalyptic number.

101031220120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101031220120 is an abundant number, since it is smaller than the sum of its proper divisors (128023495880).

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

101031220120 is a wasteful number, since it uses less digits than its factorization.

101031220120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15628 (or 15624 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 101031220120 its reverse (21022130101), we get a palindrome (122053350221).

The spelling of 101031220120 in words is "one hundred one billion, thirty-one million, two hundred twenty thousand, one hundred twenty".