21202100121202 has 128 divisors (see below), whose sum is σ = 42847012454400. Its totient is φ = 7599052800000.

The previous prime is 21202100121179. The next prime is 21202100121211. The reversal of 21202100121202 is 20212100120212.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 737424327 + ... + 737453077.

It is an arithmetic number, because the mean of its divisors is an integer number (334742284800).

Almost surely, 2^{21202100121202} is an apocalyptic number.

21202100121202 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21202100121202 is an abundant number, since it is smaller than the sum of its proper divisors (21644912333198).

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

21202100121202 is a wasteful number, since it uses less digits than its factorization.

21202100121202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30032.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 21202100121202 its reverse (20212100120212), we get a palindrome (41414200241414).

The spelling of 21202100121202 in words is "twenty-one trillion, two hundred two billion, one hundred million, one hundred twenty-one thousand, two hundred two".