202201212212122 has 4 divisors (see below), whose sum is σ = 303301818318186. Its totient is φ = 101100606106060.

The previous prime is 202201212212107. The next prime is 202201212212177. The reversal of 202201212212122 is 221212212102202.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 201350111864521 + 851100347601 = 14189789^2 + 922551^2 .

It is a junction number, because it is equal to n+sod(n) for n = 202201212212093 and 202201212212102.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50550303053029 + ... + 50550303053032.

Almost surely, 2^{202201212212122} is an apocalyptic number.

202201212212122 is a deficient number, since it is larger than the sum of its proper divisors (101100606106064).

202201212212122 is a wasteful number, since it uses less digits than its factorization.

202201212212122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101100606106063.

The product of its (nonzero) digits is 512, while the sum is 22.

Adding to 202201212212122 its reverse (221212212102202), we get a palindrome (423413424314324).

The spelling of 202201212212122 in words is "two hundred two trillion, two hundred one billion, two hundred twelve million, two hundred twelve thousand, one hundred twenty-two".