202001121988 has 12 divisors (see below), whose sum is σ = 354268782252. Its totient is φ = 100781469920.

The previous prime is 202001121977. The next prime is 202001122013. The reversal of 202001121988 is 889121100202.

It can be written as a sum of positive squares in 2 ways, for example, as 156758981184 + 45242140804 = 395928^2 + 212702^2 .

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, 54770695 + ... + 54774382.

It is an arithmetic number, because the mean of its divisors is an integer number (29522398521).

Almost surely, 2^202001121988 is an apocalyptic number.

It is an amenable number.

202001121988 is a deficient number, since it is larger than the sum of its proper divisors (152267660264).

202001121988 is a wasteful number, since it uses less digits than its factorization.

202001121988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109545542 (or 109545540 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 34.

The spelling of 202001121988 in words is "two hundred two billion, one million, one hundred twenty-one thousand, nine hundred eighty-eight".