202221110111121 has 12 divisors (see below), whose sum is σ = 294989210130420. Its totient is φ = 133479280600800.

The previous prime is 202221110111113. The next prime is 202221110111123. The reversal of 202221110111121 is 121111011122202.

It is a happy number.

202221110111121 is a `hidden beast` number, since 202 + 221 + 1 + 10 + 111 + 121 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 181023704795025 + 21197405316096 = 13454505^2 + 4604064^2 .

It is not a de Polignac number, because 202221110111121 - 2³ = 202221110111113 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 202221110111094 and 202221110111103.

It is not an unprimeable number, because it can be changed into a prime (202221110111123) 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, 111232732926 + ... + 111232734743.

It is an arithmetic number, because the mean of its divisors is an integer number (24582434177535).

Almost surely, 2^{202221110111121} is an apocalyptic number.

It is an amenable number.

202221110111121 is a deficient number, since it is larger than the sum of its proper divisors (92768100019299).

202221110111121 is a wasteful number, since it uses less digits than its factorization.

202221110111121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222465467776 (or 222465467773 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 202221110111121 its reverse (121111011122202), we get a palindrome (323332121233323).

The spelling of 202221110111121 in words is "two hundred two trillion, two hundred twenty-one billion, one hundred ten million, one hundred eleven thousand, one hundred twenty-one".