201002122100 has 72 divisors (see below), whose sum is σ = 490149461760. Its totient is φ = 70989367680.

The previous prime is 201002122093. The next prime is 201002122109. The reversal of 201002122100 is 1221200102.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201002122109) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3331340 + ... + 3391139.

Almost surely, 2^201002122100 is an apocalyptic number.

201002122100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201002122100 is an abundant number, since it is smaller than the sum of its proper divisors (289147339660).

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

201002122100 is a wasteful number, since it uses less digits than its factorization.

201002122100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6722529 (or 6722522 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 201002122100 its reverse (1221200102), we get a palindrome (202223322202).

The spelling of 201002122100 in words is "two hundred one billion, two million, one hundred twenty-two thousand, one hundred".