116221220055 has 24 divisors (see below), whose sum is σ = 201568124160. Its totient is φ = 61948340160.

The previous prime is 116221220047. The next prime is 116221220057. The reversal of 116221220055 is 550022122611.

116221220055 is a `hidden beast` number, since 1 + 1 + 622 + 12 + 20 + 0 + 5 + 5 = 666.

It is not a de Polignac number, because 116221220055 - 2³ = 116221220047 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (116221220057) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 678711 + ... + 832520.

It is an arithmetic number, because the mean of its divisors is an integer number (8398671840).

Almost surely, 2^116221220055 is an apocalyptic number.

116221220055 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

116221220055 is a deficient number, since it is larger than the sum of its proper divisors (85346904105).

116221220055 is a wasteful number, since it uses less digits than its factorization.

116221220055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1512951 (or 1512948 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

Adding to 116221220055 its reverse (550022122611), we get a palindrome (666243342666).

The spelling of 116221220055 in words is "one hundred sixteen billion, two hundred twenty-one million, two hundred twenty thousand, fifty-five".