1151221312513 has 16 divisors (see below), whose sum is σ = 1195293139200. Its totient is φ = 1107974620800.

The previous prime is 1151221312459. The next prime is 1151221312519. The reversal of 1151221312513 is 3152131221511.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1151221312513 - 2²⁹ = 1150684441601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1151221312519) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11702853 + ... + 11800813.

It is an arithmetic number, because the mean of its divisors is an integer number (74705821200).

Almost surely, 2^{1151221312513} is an apocalyptic number.

It is an amenable number.

1151221312513 is a deficient number, since it is larger than the sum of its proper divisors (44071826687).

1151221312513 is an equidigital number, since it uses as much as digits as its factorization.

1151221312513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102168.

The product of its digits is 1800, while the sum is 28.

The spelling of 1151221312513 in words is "one trillion, one hundred fifty-one billion, two hundred twenty-one million, three hundred twelve thousand, five hundred thirteen".