202201212121192 has 8 divisors (see below), whose sum is σ = 379127272727250. Its totient is φ = 101100606060592.

The previous prime is 202201212121187. The next prime is 202201212121217. The reversal of 202201212121192 is 291121212102202.

202201212121192 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 114809639185476 + 87391572935716 = 10714926^2 + 9348346^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 202201212121192.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12637575757567 + ... + 12637575757582.

Almost surely, 2^{202201212121192} is an apocalyptic number.

It is an amenable number.

202201212121192 is a deficient number, since it is larger than the sum of its proper divisors (176926060606058).

202201212121192 is a wasteful number, since it uses less digits than its factorization.

202201212121192 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25275151515155 (or 25275151515151 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 28.

Adding to 202201212121192 its reverse (291121212102202), we get a palindrome (493322424223394).

The spelling of 202201212121192 in words is "two hundred two trillion, two hundred one billion, two hundred twelve million, one hundred twenty-one thousand, one hundred ninety-two".