3121222545416 has 32 divisors (see below), whose sum is σ = 6031642320000. Its totient is φ = 1513393851456.

The previous prime is 3121222545407. The next prime is 3121222545439. The reversal of 3121222545416 is 6145452221213.

It is a super-2 number, since 2×3121222545416² (a number of 26 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 3121222545416.

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, 38037566 + ... + 38119533.

It is an arithmetic number, because the mean of its divisors is an integer number (188488822500).

Almost surely, 2^{3121222545416} is an apocalyptic number.

It is an amenable number.

3121222545416 is a deficient number, since it is larger than the sum of its proper divisors (2910419774584).

3121222545416 is a wasteful number, since it uses less digits than its factorization.

3121222545416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76157261 (or 76157257 counting only the distinct ones).

The product of its digits is 115200, while the sum is 38.

Adding to 3121222545416 its reverse (6145452221213), we get a palindrome (9266674766629).

The spelling of 3121222545416 in words is "three trillion, one hundred twenty-one billion, two hundred twenty-two million, five hundred forty-five thousand, four hundred sixteen".