12101577228 has 120 divisors (see below), whose sum is σ = 36073743552. Its totient is φ = 3504508416.

The previous prime is 12101577221. The next prime is 12101577253. The reversal of 12101577228 is 82277510121.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 12101577192 and 12101577201.

It is not an unprimeable number, because it can be changed into a prime (12101577221) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 12900 + ... + 156107.

Almost surely, 2^12101577228 is an apocalyptic number.

12101577228 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12101577228, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18036871776).

12101577228 is an abundant number, since it is smaller than the sum of its proper divisors (23972166324).

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

12101577228 is a wasteful number, since it uses less digits than its factorization.

12101577228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169053 (or 169042 counting only the distinct ones).

The product of its (nonzero) digits is 15680, while the sum is 36.

The spelling of 12101577228 in words is "twelve billion, one hundred one million, five hundred seventy-seven thousand, two hundred twenty-eight".