202022221100121 has 48 divisors (see below), whose sum is σ = 323313122240784. Its totient is φ = 121006080479232.

The previous prime is 202022221100113. The next prime is 202022221100179. The reversal of 202022221100121 is 121001122220202.

It is a happy number.

202022221100121 is a `hidden beast` number, since 20 + 202 + 2 + 221 + 100 + 121 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 50881629194496 + 151140591905625 = 7133136^2 + 12293925^2 .

It is not a de Polignac number, because 202022221100121 - 2³ = 202022221100113 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 202022221100094 and 202022221100103.

It is not an unprimeable number, because it can be changed into a prime (202022221100111) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 336366636 + ... + 336966701.

It is an arithmetic number, because the mean of its divisors is an integer number (6735690046683).

Almost surely, 2^{202022221100121} is an apocalyptic number.

It is an amenable number.

202022221100121 is a deficient number, since it is larger than the sum of its proper divisors (121290901140663).

202022221100121 is a wasteful number, since it uses less digits than its factorization.

202022221100121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 673333450 (or 673333447 counting only the distinct ones).

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

Adding to 202022221100121 its reverse (121001122220202), we get a palindrome (323023343320323).

The spelling of 202022221100121 in words is "two hundred two trillion, twenty-two billion, two hundred twenty-one million, one hundred thousand, one hundred twenty-one".