202022021192 has 8 divisors (see below), whose sum is σ = 378791289750. Its totient is φ = 101011010592.

The previous prime is 202022021191. The next prime is 202022021231. The reversal of 202022021192 is 291120220202.

It can be written as a sum of positive squares in only one way, i.e., 173011074916 + 29010946276 = 415946^2 + 170326^2 .

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

It is not an unprimeable number, because it can be changed into a prime (202022021191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12626376317 + ... + 12626376332.

Almost surely, 2^202022021192 is an apocalyptic number.

It is an amenable number.

202022021192 is a deficient number, since it is larger than the sum of its proper divisors (176769268558).

202022021192 is a wasteful number, since it uses less digits than its factorization.

202022021192 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25252752655 (or 25252752651 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 23.

Adding to 202022021192 its reverse (291120220202), we get a palindrome (493142241394).

The spelling of 202022021192 in words is "two hundred two billion, twenty-two million, twenty-one thousand, one hundred ninety-two".