1220311425115 has 4 divisors (see below), whose sum is σ = 1464373710144. Its totient is φ = 976249140088.

The previous prime is 1220311425107. The next prime is 1220311425127. The reversal of 1220311425115 is 5115241130221.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1220311425115 - 2³ = 1220311425107 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 122031142507 + ... + 122031142516.

It is an arithmetic number, because the mean of its divisors is an integer number (366093427536).

Almost surely, 2^{1220311425115} is an apocalyptic number.

1220311425115 is a deficient number, since it is larger than the sum of its proper divisors (244062285029).

1220311425115 is an equidigital number, since it uses as much as digits as its factorization.

1220311425115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244062285028.

The product of its (nonzero) digits is 2400, while the sum is 28.

Adding to 1220311425115 its reverse (5115241130221), we get a palindrome (6335552555336).

The spelling of 1220311425115 in words is "one trillion, two hundred twenty billion, three hundred eleven million, four hundred twenty-five thousand, one hundred fifteen".