210121201122198 has 16 divisors (see below), whose sum is σ = 420304559166576. Its totient is φ = 70030040887040.

The previous prime is 210121201122179. The next prime is 210121201122211. The reversal of 210121201122198 is 891221102121012.

It is a super-2 number, since 2×210121201122198² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2589827811 + ... + 2589908942.

It is an arithmetic number, because the mean of its divisors is an integer number (26269034947911).

Almost surely, 2^{210121201122198} is an apocalyptic number.

210121201122198 is an abundant number, since it is smaller than the sum of its proper divisors (210183358044378).

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

210121201122198 is a wasteful number, since it uses less digits than its factorization.

210121201122198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5179743519.

The product of its (nonzero) digits is 2304, while the sum is 33.

The spelling of 210121201122198 in words is "two hundred ten trillion, one hundred twenty-one billion, two hundred one million, one hundred twenty-two thousand, one hundred ninety-eight".