21122503403202 has 24 divisors (see below), whose sum is σ = 45770589200700. Its totient is φ = 7040039827680.

The previous prime is 21122503403167. The next prime is 21122503403273. The reversal of 21122503403202 is 20230430522112.

21122503403202 is a `hidden beast` number, since 2 + 1 + 1 + 2 + 2 + 50 + 3 + 403 + 202 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 21111718373001 + 10785030201 = 4594749^2 + 103851^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 66056077 + ... + 66375072.

Almost surely, 2^{21122503403202} is an apocalyptic number.

21122503403202 is an abundant number, since it is smaller than the sum of its proper divisors (24648085797498).

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

21122503403202 is a wasteful number, since it uses less digits than its factorization.

21122503403202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132440018 (or 132440015 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

Adding to 21122503403202 its reverse (20230430522112), we get a palindrome (41352933925314).

The spelling of 21122503403202 in words is "twenty-one trillion, one hundred twenty-two billion, five hundred three million, four hundred three thousand, two hundred two".