1216156294007 has 8 divisors (see below), whose sum is σ = 1276043889120. Its totient is φ = 1156852968480.

The previous prime is 1216156293931. The next prime is 1216156294079. The reversal of 1216156294007 is 7004926516121.

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 1216156294007 - 2¹⁸ = 1216156031863 is a prime.

It is a super-2 number, since 2×1216156294007² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1216156294097) 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, 146063132 + ... + 146071457.

It is an arithmetic number, because the mean of its divisors is an integer number (159505486140).

Almost surely, 2^{1216156294007} is an apocalyptic number.

1216156294007 is a deficient number, since it is larger than the sum of its proper divisors (59887595113).

1216156294007 is a wasteful number, since it uses less digits than its factorization.

1216156294007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 292134793.

The product of its (nonzero) digits is 181440, while the sum is 44.

The spelling of 1216156294007 in words is "one trillion, two hundred sixteen billion, one hundred fifty-six million, two hundred ninety-four thousand, seven".