202121101212201 has 16 divisors (see below), whose sum is σ = 315198598382400. Its totient is φ = 127655432344224.

The previous prime is 202121101212169. The next prime is 202121101212223. The reversal of 202121101212201 is 102212101121202.

202121101212201 is a `hidden beast` number, since 2 + 0 + 212 + 110 + 121 + 220 + 1 = 666.

It is not a de Polignac number, because 202121101212201 - 2⁵ = 202121101212169 is a prime.

It is not an unprimeable number, because it can be changed into a prime (202121101217201) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 196999123476 + ... + 196999124501.

It is an arithmetic number, because the mean of its divisors is an integer number (19699912398900).

Almost surely, 2^{202121101212201} is an apocalyptic number.

It is an amenable number.

202121101212201 is a deficient number, since it is larger than the sum of its proper divisors (113077497170199).

202121101212201 is a wasteful number, since it uses less digits than its factorization.

202121101212201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 393998248005 (or 393998247999 counting only the distinct ones).

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

Adding to 202121101212201 its reverse (102212101121202), we get a palindrome (304333202333403).

Subtracting from 202121101212201 its reverse (102212101121202), we obtain a palindrome (99909000090999).

The spelling of 202121101212201 in words is "two hundred two trillion, one hundred twenty-one billion, one hundred one million, two hundred twelve thousand, two hundred one".