10111200120 has 96 divisors (see below), whose sum is σ = 37555895520. Its totient is φ = 2311130880.

The previous prime is 10111200101. The next prime is 10111200139. The reversal of 10111200120 is 2100211101.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (10111200101) and next prime (10111200139).

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2003671 + ... + 2008710.

It is an arithmetic number, because the mean of its divisors is an integer number (391207245).

Almost surely, 2^10111200120 is an apocalyptic number.

10111200120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10111200120 is an abundant number, since it is smaller than the sum of its proper divisors (27444695400).

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

10111200120 is a wasteful number, since it uses less digits than its factorization.

10111200120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4012405 (or 4012398 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 10111200120 its reverse (2100211101), we get a palindrome (12211411221).

The spelling of 10111200120 in words is "ten billion, one hundred eleven million, two hundred thousand, one hundred twenty".