2121642225012 has 24 divisors (see below), whose sum is σ = 4998561620416. Its totient is φ = 700347918528.

The previous prime is 2121642225007. The next prime is 2121642225041. The reversal of 2121642225012 is 2105222461212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 858268273 + ... + 858270744.

Almost surely, 2^{2121642225012} is an apocalyptic number.

It is an amenable number.

2121642225012 is an abundant number, since it is smaller than the sum of its proper divisors (2876919395404).

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

2121642225012 is a wasteful number, since it uses less digits than its factorization.

2121642225012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1716539127 (or 1716539125 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 30.

Adding to 2121642225012 its reverse (2105222461212), we get a palindrome (4226864686224).

The spelling of 2121642225012 in words is "two trillion, one hundred twenty-one billion, six hundred forty-two million, two hundred twenty-five thousand, twelve".