2171870220200 has 48 divisors (see below), whose sum is σ = 5144873725980. Its totient is φ = 852356610560.

The previous prime is 2171870220127. The next prime is 2171870220241. The reversal of 2171870220200 is 20220781712.

It can be written as a sum of positive squares in 6 ways, for example, as 374517072484 + 1797353147716 = 611978^2 + 1340654^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 102436109 + ... + 102457308.

Almost surely, 2^{2171870220200} is an apocalyptic number.

2171870220200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2171870220200 is an abundant number, since it is smaller than the sum of its proper divisors (2973003505780).

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

2171870220200 is a wasteful number, since it uses less digits than its factorization.

2171870220200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204893486 (or 204893477 counting only the distinct ones).

The product of its (nonzero) digits is 6272, while the sum is 32.

The spelling of 2171870220200 in words is "two trillion, one hundred seventy-one billion, eight hundred seventy million, two hundred twenty thousand, two hundred".