113400221 has 16 divisors (see below), whose sum is σ = 125664000. Its totient is φ = 101476800.

The previous prime is 113400197. The next prime is 113400223. The reversal of 113400221 is 122004311.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-113400221 is a prime.

It is a super-2 number, since 2×113400221² = 25719220245697682, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 113400196 and 113400205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113400223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 324755 + ... + 325103.

It is an arithmetic number, because the mean of its divisors is an integer number (7854000).

Almost surely, 2^113400221 is an apocalyptic number.

113400221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

113400221 is a deficient number, since it is larger than the sum of its proper divisors (12263779).

113400221 is a wasteful number, since it uses less digits than its factorization.

113400221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 740.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 113400221 is about 10648.9539861904. The cubic root of 113400221 is about 484.0289082408.

Adding to 113400221 its reverse (122004311), we get a palindrome (235404532).

The spelling of 113400221 in words is "one hundred thirteen million, four hundred thousand, two hundred twenty-one".