3456221521044 has 24 divisors (see below), whose sum is σ = 8142813165760. Its totient is φ = 1140888657024.

The previous prime is 3456221521043. The next prime is 3456221521061. The reversal of 3456221521044 is 4401251226543.

It is a junction number, because it is equal to n+sod(n) for n = 3456221520993 and 3456221521011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3456221521043) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1398146629 + ... + 1398149100.

Almost surely, 2^{3456221521044} is an apocalyptic number.

It is an amenable number.

3456221521044 is an abundant number, since it is smaller than the sum of its proper divisors (4686591644716).

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

3456221521044 is a wasteful number, since it uses less digits than its factorization.

3456221521044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2796295839 (or 2796295837 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 39.

Adding to 3456221521044 its reverse (4401251226543), we get a palindrome (7857472747587).

The spelling of 3456221521044 in words is "three trillion, four hundred fifty-six billion, two hundred twenty-one million, five hundred twenty-one thousand, forty-four".