202100021002 has 16 divisors (see below), whose sum is σ = 331581722400. Its totient is φ = 91621257840.

The previous prime is 202100020961. The next prime is 202100021003. The reversal of 202100021002 is 200120001202.

It is a self number, because there is not a number n which added to its sum of digits gives 202100021002.

It is not an unprimeable number, because it can be changed into a prime (202100021003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12110877 + ... + 12127552.

It is an arithmetic number, because the mean of its divisors is an integer number (20723857650).

Almost surely, 2^202100021002 is an apocalyptic number.

202100021002 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

202100021002 is a deficient number, since it is larger than the sum of its proper divisors (129481701398).

202100021002 is a wasteful number, since it uses less digits than its factorization.

202100021002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24238821.

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 202100021002 its reverse (200120001202), we get a palindrome (402220022204).

The spelling of 202100021002 in words is "two hundred two billion, one hundred million, twenty-one thousand, two".