101110021200 has 120 divisors (see below), whose sum is σ = 359876817600. Its totient is φ = 26962669440.

The previous prime is 101110021169. The next prime is 101110021211. The reversal of 101110021200 is 2120011101.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (120).

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

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, 4670220 + ... + 4691819.

It is an arithmetic number, because the mean of its divisors is an integer number (2998973480).

Almost surely, 2^101110021200 is an apocalyptic number.

101110021200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101110021200 is an abundant number, since it is smaller than the sum of its proper divisors (258766796400).

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

101110021200 is a wasteful number, since it uses less digits than its factorization.

101110021200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9362066 (or 9362049 counting only the distinct ones).

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

Adding to 101110021200 its reverse (2120011101), we get a palindrome (103230032301).

The spelling of 101110021200 in words is "one hundred one billion, one hundred ten million, twenty-one thousand, two hundred".