20120002012120 has 32 divisors (see below), whose sum is σ = 45270176015520. Its totient is φ = 8047970318080.

The previous prime is 20120002012109. The next prime is 20120002012129. The reversal of 20120002012120 is 2121020002102.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 20120002012120.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20120002012129) 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, 11868900 + ... + 13457740.

It is an arithmetic number, because the mean of its divisors is an integer number (1414693000485).

Almost surely, 2^{20120002012120} is an apocalyptic number.

20120002012120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20120002012120 is an abundant number, since it is smaller than the sum of its proper divisors (25150174003400).

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

20120002012120 is a wasteful number, since it uses less digits than its factorization.

20120002012120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1905435 (or 1905431 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 20120002012120 its reverse (2121020002102), we get a palindrome (22241022014222).

The spelling of 20120002012120 in words is "twenty trillion, one hundred twenty billion, two million, twelve thousand, one hundred twenty".