210102121080 has 128 divisors (see below), whose sum is σ = 709205760000. Its totient is φ = 55318004352.

The previous prime is 210102121063. The next prime is 210102121081. The reversal of 210102121080 is 80121201012.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210102121081) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1145940 + ... + 1316579.

It is an arithmetic number, because the mean of its divisors is an integer number (5540670000).

Almost surely, 2^210102121080 is an apocalyptic number.

210102121080 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

210102121080 is an abundant number, since it is smaller than the sum of its proper divisors (499103638920).

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

210102121080 is a wasteful number, since it uses less digits than its factorization.

210102121080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2462618 (or 2462608 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 210102121080 its reverse (80121201012), we get a palindrome (290223322092).

The spelling of 210102121080 in words is "two hundred ten billion, one hundred two million, one hundred twenty-one thousand, eighty".