210101309980 has 48 divisors (see below), whose sum is σ = 455869197504. Its totient is φ = 81293488640.

The previous prime is 210101309963. The next prime is 210101309989. The reversal of 210101309980 is 89903101012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210101309989) 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, 1320577 + ... + 1471096.

It is an arithmetic number, because the mean of its divisors is an integer number (9497274948).

Almost surely, 2^210101309980 is an apocalyptic number.

210101309980 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

210101309980 is an abundant number, since it is smaller than the sum of its proper divisors (245767887524).

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

210101309980 is a wasteful number, since it uses less digits than its factorization.

210101309980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2791806 (or 2791804 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 34.

The spelling of 210101309980 in words is "two hundred ten billion, one hundred one million, three hundred nine thousand, nine hundred eighty".