21202455020211 has 48 divisors (see below), whose sum is σ = 32913327271968. Its totient is φ = 13105581465600.

The previous prime is 21202455020209. The next prime is 21202455020303. The reversal of 21202455020211 is 11202055420212.

21202455020211 is a `hidden beast` number, since 2 + 1 + 2 + 0 + 2 + 455 + 0 + 202 + 1 + 1 = 666.

It is not a de Polignac number, because 21202455020211 - 2¹ = 21202455020209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21202455010211) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1114870 + ... + 6606651.

It is an arithmetic number, because the mean of its divisors is an integer number (685694318166).

Almost surely, 2^{21202455020211} is an apocalyptic number.

21202455020211 is a deficient number, since it is larger than the sum of its proper divisors (11710872251757).

21202455020211 is a wasteful number, since it uses less digits than its factorization.

21202455020211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7721812 (or 7721809 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 27.

The spelling of 21202455020211 in words is "twenty-one trillion, two hundred two billion, four hundred fifty-five million, twenty thousand, two hundred eleven".