101200001021100 has 108 divisors (see below), whose sum is σ = 317237756395560. Its totient is φ = 26983946592000.

The previous prime is 101200001021069. The next prime is 101200001021137. The reversal of 101200001021100 is 1120100002101.

It is a happy number.

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

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, 3273675 + ... + 14598525.

Almost surely, 2^{101200001021100} is an apocalyptic number.

101200001021100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101200001021100 is an abundant number, since it is smaller than the sum of its proper divisors (216037755374460).

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

101200001021100 is a wasteful number, since it uses less digits than its factorization.

101200001021100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11334800 (or 11334790 counting only the distinct ones).

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

Adding to 101200001021100 its reverse (1120100002101), we get a palindrome (102320101023201).

The spelling of 101200001021100 in words is "one hundred one trillion, two hundred billion, one million, twenty-one thousand, one hundred".