3121226145556 has 12 divisors (see below), whose sum is σ = 5463307204992. Its totient is φ = 1560281229848.

The previous prime is 3121226145509. The next prime is 3121226145559. The reversal of 3121226145556 is 6555416221213.

It is a super-4 number, since 4×3121226145556⁴ (a number of 51 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3121226145559) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 82939570 + ... + 82977193.

It is an arithmetic number, because the mean of its divisors is an integer number (455275600416).

Almost surely, 2^{3121226145556} is an apocalyptic number.

It is an amenable number.

3121226145556 is a deficient number, since it is larger than the sum of its proper divisors (2342081059436).

3121226145556 is a wasteful number, since it uses less digits than its factorization.

3121226145556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165921470 (or 165921468 counting only the distinct ones).

The product of its digits is 432000, while the sum is 43.

The spelling of 3121226145556 in words is "three trillion, one hundred twenty-one billion, two hundred twenty-six million, one hundred forty-five thousand, five hundred fifty-six".