2121122310012 has 24 divisors (see below), whose sum is σ = 5499205989200. Its totient is φ = 707040769968.

The previous prime is 2121122309993. The next prime is 2121122310053. The reversal of 2121122310012 is 2100132211212.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9820010587 + ... + 9820010802.

Almost surely, 2^{2121122310012} is an apocalyptic number.

It is an amenable number.

2121122310012 is an abundant number, since it is smaller than the sum of its proper divisors (3378083679188).

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

2121122310012 is a wasteful number, since it uses less digits than its factorization.

2121122310012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19640021402 (or 19640021394 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 2121122310012 its reverse (2100132211212), we get a palindrome (4221254521224).

The spelling of 2121122310012 in words is "two trillion, one hundred twenty-one billion, one hundred twenty-two million, three hundred ten thousand, twelve".