1021100032200 has 96 divisors (see below), whose sum is σ = 3232759340160. Its totient is φ = 266499859200.

The previous prime is 1021100032187. The next prime is 1021100032201. The reversal of 1021100032200 is 22300011201.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is not an unprimeable number, because it can be changed into a prime (1021100032201) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 18076411 + ... + 18132810.

It is an arithmetic number, because the mean of its divisors is an integer number (33674576460).

Almost surely, 2^{1021100032200} is an apocalyptic number.

1021100032200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1021100032200 is an abundant number, since it is smaller than the sum of its proper divisors (2211659307960).

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

1021100032200 is a wasteful number, since it uses less digits than its factorization.

1021100032200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36209287 (or 36209278 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

Adding to 1021100032200 its reverse (22300011201), we get a palindrome (1043400043401).

The spelling of 1021100032200 in words is "one trillion, twenty-one billion, one hundred million, thirty-two thousand, two hundred".