101121002100 has 72 divisors (see below), whose sum is σ = 325085304320. Its totient is φ = 26965599840.

The previous prime is 101121002083. The next prime is 101121002123. The reversal of 101121002100 is 1200121101.

It is a happy number.

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, 18723412 + ... + 18728811.

Almost surely, 2^101121002100 is an apocalyptic number.

101121002100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101121002100 is an abundant number, since it is smaller than the sum of its proper divisors (223964302220).

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

101121002100 is a wasteful number, since it uses less digits than its factorization.

101121002100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37452246 (or 37452233 counting only the distinct ones).

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

Adding to 101121002100 its reverse (1200121101), we get a palindrome (102321123201).

The spelling of 101121002100 in words is "one hundred one billion, one hundred twenty-one million, two thousand, one hundred".