1220515153131 has 8 divisors (see below), whose sum is σ = 1631129301504. Its totient is φ = 811788886760.

The previous prime is 1220515153127. The next prime is 1220515153181. The reversal of 1220515153131 is 1313515150221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1220515153131 - 2² = 1220515153127 is a prime.

It is a super-2 number, since 2×1220515153131² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1220515153181) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 471968991 + ... + 471971576.

It is an arithmetic number, because the mean of its divisors is an integer number (203891162688).

Almost surely, 2^{1220515153131} is an apocalyptic number.

1220515153131 is a deficient number, since it is larger than the sum of its proper divisors (410614148373).

1220515153131 is an equidigital number, since it uses as much as digits as its factorization.

1220515153131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 943941001.

The product of its (nonzero) digits is 4500, while the sum is 30.

The spelling of 1220515153131 in words is "one trillion, two hundred twenty billion, five hundred fifteen million, one hundred fifty-three thousand, one hundred thirty-one".