202102121100213 has 12 divisors (see below), whose sum is σ = 296710946461228. Its totient is φ = 132525981048960.

The previous prime is 202102121100211. The next prime is 202102121100221. The reversal of 202102121100213 is 312001121201202.

202102121100213 is a `hidden beast` number, since 20 + 210 + 2 + 121 + 100 + 213 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 13728225446244 + 188373895653969 = 3705162^2 + 13724937^2 .

It is not a de Polignac number, because 202102121100213 - 2¹ = 202102121100211 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202102121100211) 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, 184063862020 + ... + 184063863117.

Almost surely, 2^{202102121100213} is an apocalyptic number.

It is an amenable number.

202102121100213 is a deficient number, since it is larger than the sum of its proper divisors (94608825361015).

202102121100213 is a wasteful number, since it uses less digits than its factorization.

202102121100213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 368127725204 (or 368127725201 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 202102121100213 its reverse (312001121201202), we get a palindrome (514103242301415).

The spelling of 202102121100213 in words is "two hundred two trillion, one hundred two billion, one hundred twenty-one million, one hundred thousand, two hundred thirteen".