20120002120002 has 16 divisors (see below), whose sum is σ = 40240538274240. Its totient is φ = 6706578367632.

The previous prime is 20120002119953. The next prime is 20120002120027. The reversal of 20120002120002 is 20002120002102.

It is a self number, because there is not a number n which added to its sum of digits gives 20120002120002.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21760813 + ... + 22666560.

It is an arithmetic number, because the mean of its divisors is an integer number (2515033642140).

Almost surely, 2^{20120002120002} is an apocalyptic number.

20120002120002 is an abundant number, since it is smaller than the sum of its proper divisors (20120536154238).

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

20120002120002 is a wasteful number, since it uses less digits than its factorization.

20120002120002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44502857.

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 20120002120002 its reverse (20002120002102), we get a palindrome (40122122122104).

The spelling of 20120002120002 in words is "twenty trillion, one hundred twenty billion, two million, one hundred twenty thousand, two".