201202112020021 has 12 divisors (see below), whose sum is σ = 246369933086880. Its totient is φ = 163382166150840.

The previous prime is 201202112019947. The next prime is 201202112020033. The reversal of 201202112020021 is 120020211202102.

It is a happy number.

It is not a de Polignac number, because 201202112020021 - 2³⁵ = 201167752281653 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 201202112019977 and 201202112020004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201202112024021) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 108056987265 + ... + 108056989126.

It is an arithmetic number, because the mean of its divisors is an integer number (20530827757240).

Almost surely, 2^{201202112020021} is an apocalyptic number.

It is an amenable number.

201202112020021 is a deficient number, since it is larger than the sum of its proper divisors (45167821066859).

201202112020021 is a wasteful number, since it uses less digits than its factorization.

201202112020021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216113976424 (or 216113976417 counting only the distinct ones).

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

Adding to 201202112020021 its reverse (120020211202102), we get a palindrome (321222323222123).

The spelling of 201202112020021 in words is "two hundred one trillion, two hundred two billion, one hundred twelve million, twenty thousand, twenty-one".