116557121211 has 8 divisors (see below), whose sum is σ = 155509186560. Its totient is φ = 77654901672.

The previous prime is 116557121167. The next prime is 116557121231. The reversal of 116557121211 is 112121755611.

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

It is not a de Polignac number, because 116557121211 - 2¹⁷ = 116556990139 is a prime.

It is a super-2 number, since 2×116557121211² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (116557121231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12455995 + ... + 12465348.

It is an arithmetic number, because the mean of its divisors is an integer number (19438648320).

Almost surely, 2^116557121211 is an apocalyptic number.

116557121211 is a deficient number, since it is larger than the sum of its proper divisors (38952065349).

116557121211 is a wasteful number, since it uses less digits than its factorization.

116557121211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24922905.

The product of its digits is 4200, while the sum is 33.

Adding to 116557121211 its reverse (112121755611), we get a palindrome (228678876822).

The spelling of 116557121211 in words is "one hundred sixteen billion, five hundred fifty-seven million, one hundred twenty-one thousand, two hundred eleven".