202121220200212 has 12 divisors (see below), whose sum is σ = 353714696536180. Its totient is φ = 101059878332736.

The previous prime is 202121220200171. The next prime is 202121220200299. The reversal of 202121220200212 is 212002022121202.

It can be written as a sum of positive squares in 2 ways, for example, as 102094938473616 + 100026281726596 = 10104204^2 + 10001314^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 202121220200212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 182320137 + ... + 183425392.

Almost surely, 2^{202121220200212} is an apocalyptic number.

It is an amenable number.

202121220200212 is a deficient number, since it is larger than the sum of its proper divisors (151593476335968).

202121220200212 is a wasteful number, since it uses less digits than its factorization.

202121220200212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 365883690 (or 365883688 counting only the distinct ones).

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

Adding to 202121220200212 its reverse (212002022121202), we get a palindrome (414123242321414).

The spelling of 202121220200212 in words is "two hundred two trillion, one hundred twenty-one billion, two hundred twenty million, two hundred thousand, two hundred twelve".