210120021012 has 96 divisors (see below), whose sum is σ = 571811595264. Its totient is φ = 59345395200.

The previous prime is 210120020963. The next prime is 210120021017.

210120021012 is nontrivially palindromic in base 10.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210120021017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 223414 + ... + 685677.

It is an arithmetic number, because the mean of its divisors is an integer number (5956370784).

Almost surely, 2^210120021012 is an apocalyptic number.

210120021012 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

210120021012 is an abundant number, since it is smaller than the sum of its proper divisors (361691574252).

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

210120021012 is a wasteful number, since it uses less digits than its factorization.

210120021012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 909229 (or 909227 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

It can be divided in two parts, 2101200 and 21012, that multiplied together give a square (44150414400 = 210120²).

The spelling of 210120021012 in words is "two hundred ten billion, one hundred twenty million, twenty-one thousand, twelve".