201202121102121 has 24 divisors (see below), whose sum is σ = 292242361617024. Its totient is φ = 133388462702880.

The previous prime is 201202121102063. The next prime is 201202121102123. The reversal of 201202121102121 is 121201121202102.

201202121102121 is a `hidden beast` number, since 201 + 20 + 21 + 211 + 0 + 212 + 1 = 666.

It is not a de Polignac number, because 201202121102121 - 2¹⁰ = 201202121101097 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 201202121102094 and 201202121102103.

It is not an unprimeable number, because it can be changed into a prime (201202121102123) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 39543280 + ... + 44340446.

It is an arithmetic number, because the mean of its divisors is an integer number (12176765067376).

Almost surely, 2^{201202121102121} is an apocalyptic number.

It is an amenable number.

201202121102121 is a deficient number, since it is larger than the sum of its proper divisors (91040240514903).

201202121102121 is a wasteful number, since it uses less digits than its factorization.

201202121102121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4823101 (or 4823098 counting only the distinct ones).

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

Adding to 201202121102121 its reverse (121201121202102), we get a palindrome (322403242304223).

The spelling of 201202121102121 in words is "two hundred one trillion, two hundred two billion, one hundred twenty-one million, one hundred two thousand, one hundred twenty-one".