12100056571098 has 128 divisors (see below), whose sum is σ = 28826951639040. Its totient is φ = 3795471945216.

The previous prime is 12100056571051. The next prime is 12100056571103. The reversal of 12100056571098 is 89017565000121.

12100056571098 is a `hidden beast` number, since 1 + 2 + 10 + 0 + 0 + 565 + 71 + 0 + 9 + 8 = 666.

It is a super-2 number, since 2×12100056571098² (a number of 27 digits) contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 694718086 + ... + 694735502.

It is an arithmetic number, because the mean of its divisors is an integer number (225210559680).

Almost surely, 2^{12100056571098} is an apocalyptic number.

12100056571098 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 12100056571098, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14413475819520).

12100056571098 is an abundant number, since it is smaller than the sum of its proper divisors (16726895067942).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12100056571098 is an equidigital number, since it uses as much as digits as its factorization.

12100056571098 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26800 (or 26782 counting only the distinct ones).

The product of its (nonzero) digits is 151200, while the sum is 45.

The spelling of 12100056571098 in words is "twelve trillion, one hundred billion, fifty-six million, five hundred seventy-one thousand, ninety-eight".