2120103412656 has 80 divisors (see below), whose sum is σ = 5593861208064. Its totient is φ = 691615867392.

The previous prime is 2120103412613. The next prime is 2120103412657. The reversal of 2120103412656 is 6562143010212.

It is not an unprimeable number, because it can be changed into a prime (2120103412657) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 45622425 + ... + 45668871.

Almost surely, 2^{2120103412656} is an apocalyptic number.

It is an amenable number.

2120103412656 is an abundant number, since it is smaller than the sum of its proper divisors (3473757795408).

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

2120103412656 is a wasteful number, since it uses less digits than its factorization.

2120103412656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66738 (or 66732 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 33.

Adding to 2120103412656 its reverse (6562143010212), we get a palindrome (8682246422868).

The spelling of 2120103412656 in words is "two trillion, one hundred twenty billion, one hundred three million, four hundred twelve thousand, six hundred fifty-six".