202121202198 has 16 divisors (see below), whose sum is σ = 408409853040. Its totient is φ = 66679159296.

The previous prime is 202121202197. The next prime is 202121202259. The reversal of 202121202198 is 891202121202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202121202193) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 173643063 + ... + 173644226.

It is an arithmetic number, because the mean of its divisors is an integer number (25525615815).

Almost surely, 2^202121202198 is an apocalyptic number.

202121202198 is an abundant number, since it is smaller than the sum of its proper divisors (206288650842).

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

202121202198 is a wasteful number, since it uses less digits than its factorization.

202121202198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 347287391.

The product of its (nonzero) digits is 2304, while the sum is 30.

The spelling of 202121202198 in words is "two hundred two billion, one hundred twenty-one million, two hundred two thousand, one hundred ninety-eight".