202221122212 has 6 divisors (see below), whose sum is σ = 353886963878. Its totient is φ = 101110561104.

The previous prime is 202221122119. The next prime is 202221122237. The reversal of 202221122212 is 212221122202.

It can be written as a sum of positive squares in only one way, i.e., 194592147876 + 7628974336 = 441126^2 + 87344^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 202221122212.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25277640273 + ... + 25277640280.

Almost surely, 2^202221122212 is an apocalyptic number.

It is an amenable number.

202221122212 is a deficient number, since it is larger than the sum of its proper divisors (151665841666).

202221122212 is a wasteful number, since it uses less digits than its factorization.

202221122212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50555280557 (or 50555280555 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 202221122212 its reverse (212221122202), we get a palindrome (414442244414).

The spelling of 202221122212 in words is "two hundred two billion, two hundred twenty-one million, one hundred twenty-two thousand, two hundred twelve".