1220431140244 has 24 divisors (see below), whose sum is σ = 2198543473448. Its totient is φ = 592352040960.

The previous prime is 1220431140239. The next prime is 1220431140259. The reversal of 1220431140244 is 4420411340221.

It can be written as a sum of positive squares in 4 ways, for example, as 69664323600 + 1150766816644 = 263940^2 + 1072738^2 .

It is a congruent number.

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, 9458037 + ... + 9586204.

Almost surely, 2^{1220431140244} is an apocalyptic number.

It is an amenable number.

1220431140244 is a deficient number, since it is larger than the sum of its proper divisors (978112333204).

1220431140244 is a wasteful number, since it uses less digits than its factorization.

1220431140244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19044715 (or 19044713 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 28.

Adding to 1220431140244 its reverse (4420411340221), we get a palindrome (5640842480465).

The spelling of 1220431140244 in words is "one trillion, two hundred twenty billion, four hundred thirty-one million, one hundred forty thousand, two hundred forty-four".