10111021200 has 180 divisors, whose sum is σ = 40100731008. Its totient is φ = 2311084800.

The previous prime is 10111021189. The next prime is 10111021229. The reversal of 10111021200 is 212011101.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (180).

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 an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 175416 + ... + 225815.

Almost surely, 2^10111021200 is an apocalyptic number.

10111021200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10111021200 is an abundant number, since it is smaller than the sum of its proper divisors (29989709808).

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

10111021200 is a wasteful number, since it uses less digits than its factorization.

10111021200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 401262 (or 401248 counting only the distinct ones).

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

Adding to 10111021200 its reverse (212011101), we get a palindrome (10323032301).

The spelling of 10111021200 in words is "ten billion, one hundred eleven million, twenty-one thousand, two hundred".