202221109992 has 64 divisors (see below), whose sum is σ = 551837952000. Its totient is φ = 61242920640.

The previous prime is 202221109991. The next prime is 202221110029. The reversal of 202221109992 is 299901122202.

It is a self number, because there is not a number n which added to its sum of digits gives 202221109992.

It is not an unprimeable number, because it can be changed into a prime (202221109991) 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 in 15 ways as a sum of consecutive naturals, for example, 223113 + ... + 673959.

It is an arithmetic number, because the mean of its divisors is an integer number (8622468000).

Almost surely, 2^202221109992 is an apocalyptic number.

202221109992 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

202221109992 is an abundant number, since it is smaller than the sum of its proper divisors (349616842008).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

202221109992 is a wasteful number, since it uses less digits than its factorization.

202221109992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 452566 (or 452562 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 39.

It can be divided in two parts, 202221 and 109992, that added together give a palindrome (312213).

The spelling of 202221109992 in words is "two hundred two billion, two hundred twenty-one million, one hundred nine thousand, nine hundred ninety-two".