1220515145434 has 16 divisors (see below), whose sum is σ = 1971653414472. Its totient is φ = 563299818048.

The previous prime is 1220515145363. The next prime is 1220515145441. The reversal of 1220515145434 is 4345415150221.

It can be written as a sum of positive squares in 4 ways, for example, as 869640177025 + 350874968409 = 932545^2 + 592347^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1220515145393 and 1220515145402.

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, 417672 + ... + 1617244.

Almost surely, 2^{1220515145434} is an apocalyptic number.

1220515145434 is a deficient number, since it is larger than the sum of its proper divisors (751138269038).

1220515145434 is a wasteful number, since it uses less digits than its factorization.

1220515145434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1238721.

The product of its (nonzero) digits is 96000, while the sum is 37.

The spelling of 1220515145434 in words is "one trillion, two hundred twenty billion, five hundred fifteen million, one hundred forty-five thousand, four hundred thirty-four".