12120021012210 has 16 divisors (see below), whose sum is σ = 29088050429376. Its totient is φ = 3232005603248.

The previous prime is 12120021012163. The next prime is 12120021012217. The reversal of 12120021012210 is 1221012002121.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 12120021012210.

It is not an unprimeable number, because it can be changed into a prime (12120021012217) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 202000350174 + ... + 202000350233.

It is an arithmetic number, because the mean of its divisors is an integer number (1818003151836).

Almost surely, 2^{12120021012210} is an apocalyptic number.

12120021012210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12120021012210 is an abundant number, since it is smaller than the sum of its proper divisors (16968029417166).

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

12120021012210 is a wasteful number, since it uses less digits than its factorization.

12120021012210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 404000700417.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 12120021012210 its reverse (1221012002121), we get a palindrome (13341033014331).

The spelling of 12120021012210 in words is "twelve trillion, one hundred twenty billion, twenty-one million, twelve thousand, two hundred ten".