201202211121021 has 64 divisors (see below), whose sum is σ = 329762077102080. Its totient is φ = 120220760520000.

The previous prime is 201202211120983. The next prime is 201202211121031. The reversal of 201202211121021 is 120121112202102.

201202211121021 is a `hidden beast` number, since 20 + 1 + 202 + 211 + 1 + 210 + 21 = 666.

It is not a de Polignac number, because 201202211121021 - 2¹⁸ = 201202210858877 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 201202211120985 and 201202211121003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201202211121031) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1732934871 + ... + 1733050971.

It is an arithmetic number, because the mean of its divisors is an integer number (5152532454720).

Almost surely, 2^{201202211121021} is an apocalyptic number.

It is an amenable number.

201202211121021 is a deficient number, since it is larger than the sum of its proper divisors (128559865981059).

201202211121021 is a wasteful number, since it uses less digits than its factorization.

201202211121021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198375 (or 198369 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 201202211121021 its reverse (120121112202102), we get a palindrome (321323323323123).

The spelling of 201202211121021 in words is "two hundred one trillion, two hundred two billion, two hundred eleven million, one hundred twenty-one thousand, twenty-one".