202120100222121 has 96 divisors (see below), whose sum is σ = 310315824000000. Its totient is φ = 126575054331264.

The previous prime is 202120100222119. The next prime is 202120100222171. The reversal of 202120100222121 is 121222001021202.

It is a happy number.

202120100222121 is a `hidden beast` number, since 202 + 1 + 20 + 100 + 222 + 121 = 666.

202120100222121 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 202120100222121 - 2¹ = 202120100222119 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 202120100222094 and 202120100222103.

It is not an unprimeable number, because it can be changed into a prime (202120100222171) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 5078502180 + ... + 5078541978.

It is an arithmetic number, because the mean of its divisors is an integer number (3232456500000).

Almost surely, 2^{202120100222121} is an apocalyptic number.

It is an amenable number.

202120100222121 is a deficient number, since it is larger than the sum of its proper divisors (108195723777879).

202120100222121 is a wasteful number, since it uses less digits than its factorization.

202120100222121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43483 (or 43480 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 202120100222121 its reverse (121222001021202), we get a palindrome (323342101243323).

The spelling of 202120100222121 in words is "two hundred two trillion, one hundred twenty billion, one hundred million, two hundred twenty-two thousand, one hundred twenty-one".