120012100021120 has 192 divisors, whose sum is σ = 304812468822960. Its totient is φ = 45175230627840.

The previous prime is 120012100021019. The next prime is 120012100021127. The reversal of 120012100021120 is 21120001210021.

It is a super-2 number, since 2×120012100021120² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 120012100021120.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120012100021127) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1610409460 + ... + 1610483980.

Almost surely, 2^{120012100021120} is an apocalyptic number.

120012100021120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 120012100021120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (152406234411480).

120012100021120 is an abundant number, since it is smaller than the sum of its proper divisors (184800368801840).

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

120012100021120 is an equidigital number, since it uses as much as digits as its factorization.

120012100021120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83281 (or 83252 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 120012100021120 its reverse (21120001210021), we get a palindrome (141132101231141).

The spelling of 120012100021120 in words is "one hundred twenty trillion, twelve billion, one hundred million, twenty-one thousand, one hundred twenty".