2121344431212 has 48 divisors (see below), whose sum is σ = 5083832632032. Its totient is φ = 687969699840.

The previous prime is 2121344431201. The next prime is 2121344431289.

It is a happy number.

2121344431212 is nontrivially palindromic in base 10.

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 2121344431212.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9853762 + ... + 10066742.

It is an arithmetic number, because the mean of its divisors is an integer number (105913179834).

Almost surely, 2^{2121344431212} is an apocalyptic number.

It is an amenable number.

2121344431212 is an abundant number, since it is smaller than the sum of its proper divisors (2962488200820).

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

2121344431212 is a wasteful number, since it uses less digits than its factorization.

2121344431212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235458 (or 235456 counting only the distinct ones).

The product of its digits is 9216, while the sum is 30.

The spelling of 2121344431212 in words is "two trillion, one hundred twenty-one billion, three hundred forty-four million, four hundred thirty-one thousand, two hundred twelve".