113215021650 has 192 divisors, whose sum is σ = 337267996800. Its totient is φ = 27828437760.

The previous prime is 113215021649. The next prime is 113215021657. The reversal of 113215021650 is 56120512311.

113215021650 is a `hidden beast` number, since 1 + 1 + 3 + 2 + 1 + 5 + 0 + 2 + 1 + 650 = 666.

It is a super-2 number, since 2×113215021650² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (113215021657) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 889404 + ... + 1008696.

It is an arithmetic number, because the mean of its divisors is an integer number (1756604150).

Almost surely, 2^113215021650 is an apocalyptic number.

113215021650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 113215021650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (168633998400).

113215021650 is an abundant number, since it is smaller than the sum of its proper divisors (224052975150).

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

113215021650 is a wasteful number, since it uses less digits than its factorization.

113215021650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119370 (or 119359 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 27.

Adding to 113215021650 its reverse (56120512311), we get a palindrome (169335533961).

The spelling of 113215021650 in words is "one hundred thirteen billion, two hundred fifteen million, twenty-one thousand, six hundred fifty".