1216060813311 has 8 divisors (see below), whose sum is σ = 1621420407984. Its totient is φ = 810704213760.

The previous prime is 1216060813283. The next prime is 1216060813339. The reversal of 1216060813311 is 1133180606121.

It is an interprime number because it is at equal distance from previous prime (1216060813283) and next prime (1216060813339).

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

It is not a de Polignac number, because 1216060813311 - 2⁷ = 1216060813183 is a prime.

It is a super-2 number, since 2×1216060813311² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1216060813811) 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, 492591 + ... + 1635471.

It is an arithmetic number, because the mean of its divisors is an integer number (202677550998).

Almost surely, 2^{1216060813311} is an apocalyptic number.

1216060813311 is a deficient number, since it is larger than the sum of its proper divisors (405359594673).

1216060813311 is a wasteful number, since it uses less digits than its factorization.

1216060813311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1497561.

The product of its (nonzero) digits is 5184, while the sum is 33.

The spelling of 1216060813311 in words is "one trillion, two hundred sixteen billion, sixty million, eight hundred thirteen thousand, three hundred eleven".