202121199974 has 8 divisors (see below), whose sum is σ = 304517403288. Its totient is φ = 100615398880.

The previous prime is 202121199949. The next prime is 202121199977. The reversal of 202121199974 is 479991121202.

202121199974 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202121199977) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 222599987 + ... + 222600894.

It is an arithmetic number, because the mean of its divisors is an integer number (38064675411).

Almost surely, 2^202121199974 is an apocalyptic number.

202121199974 is a deficient number, since it is larger than the sum of its proper divisors (102396203314).

202121199974 is a wasteful number, since it uses less digits than its factorization.

202121199974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 445201110.

The product of its (nonzero) digits is 163296, while the sum is 47.

The spelling of 202121199974 in words is "two hundred two billion, one hundred twenty-one million, one hundred ninety-nine thousand, nine hundred seventy-four".