101211001020100 has 72 divisors (see below), whose sum is σ = 232551192833568. Its totient is φ = 38102304115200.

The previous prime is 101211001020079. The next prime is 101211001020139. The reversal of 101211001020100 is 1020100112101.

It is a Harshad number since it is a multiple of its sum of digits (10).

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, 103695355 + ... + 104666845.

It is an arithmetic number, because the mean of its divisors is an integer number (3229877678244).

Almost surely, 2^{101211001020100} is an apocalyptic number.

101211001020100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101211001020100 is an abundant number, since it is smaller than the sum of its proper divisors (131340191813468).

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

101211001020100 is a wasteful number, since it uses less digits than its factorization.

101211001020100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1032805 (or 1032798 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 101211001020100 its reverse (1020100112101), we get a palindrome (102231101132201).

The spelling of 101211001020100 in words is "one hundred one trillion, two hundred eleven billion, one million, twenty thousand, one hundred".