113001221000 has 64 divisors (see below), whose sum is σ = 266107448880. Its totient is φ = 44912524800.

The previous prime is 113001220991. The next prime is 113001221029. The reversal of 113001221000 is 122100311.

It can be written as a sum of positive squares in 8 ways, for example, as 4387472644 + 108613748356 = 66238^2 + 329566^2 .

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 202877 + ... + 516876.

Almost surely, 2^113001221000 is an apocalyptic number.

113001221000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

113001221000 is an abundant number, since it is smaller than the sum of its proper divisors (153106227880).

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

113001221000 is a wasteful number, since it uses less digits than its factorization.

113001221000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 719931 (or 719917 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 11.

Adding to 113001221000 its reverse (122100311), we get a palindrome (113123321311).

The spelling of 113001221000 in words is "one hundred thirteen billion, one million, two hundred twenty-one thousand".