1221444131298 has 16 divisors (see below), whose sum is σ = 2444783459040. Its totient is φ = 406832177696.

The previous prime is 1221444131267. The next prime is 1221444131309. The reversal of 1221444131298 is 8921314441221.

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, 78958140 + ... + 78973607.

It is an arithmetic number, because the mean of its divisors is an integer number (152798966190).

Almost surely, 2^{1221444131298} is an apocalyptic number.

1221444131298 is an abundant number, since it is smaller than the sum of its proper divisors (1223339327742).

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

1221444131298 is a wasteful number, since it uses less digits than its factorization.

1221444131298 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157933041.

The product of its digits is 110592, while the sum is 42.

The spelling of 1221444131298 in words is "one trillion, two hundred twenty-one billion, four hundred forty-four million, one hundred thirty-one thousand, two hundred ninety-eight".