201000021002100 has 72 divisors (see below), whose sum is σ = 646177845304320. Its totient is φ = 53600005599840.

The previous prime is 201000021002083. The next prime is 201000021002113. The reversal of 201000021002100 is 1200120000102.

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, 37222223412 + ... + 37222228811.

Almost surely, 2^{201000021002100} is an apocalyptic number.

201000021002100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201000021002100 is an abundant number, since it is smaller than the sum of its proper divisors (445177824302220).

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

201000021002100 is a wasteful number, since it uses less digits than its factorization.

201000021002100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74444452246 (or 74444452233 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 201000021002100 its reverse (1200120000102), we get a palindrome (202200141002202).

The spelling of 201000021002100 in words is "two hundred one trillion, twenty-one million, two thousand, one hundred".