21020332002198 has 32 divisors (see below), whose sum is σ = 42087820492800. Its totient is φ = 6998918605056.

The previous prime is 21020332002139. The next prime is 21020332002199. The reversal of 21020332002198 is 89120023302012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21020332002199) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 145515115 + ... + 145659497.

It is an arithmetic number, because the mean of its divisors is an integer number (1315244390400).

Almost surely, 2^{21020332002198} is an apocalyptic number.

21020332002198 is an abundant number, since it is smaller than the sum of its proper divisors (21067488490602).

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

21020332002198 is a wasteful number, since it uses less digits than its factorization.

21020332002198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171436.

The product of its (nonzero) digits is 10368, while the sum is 33.

The spelling of 21020332002198 in words is "twenty-one trillion, twenty billion, three hundred thirty-two million, two thousand, one hundred ninety-eight".