113303402421 has 64 divisors (see below), whose sum is σ = 171148640256. Its totient is φ = 66080145600.

The previous prime is 113303402417. The next prime is 113303402431. The reversal of 113303402421 is 124204303311.

It is a happy number.

It is not a de Polignac number, because 113303402421 - 2² = 113303402417 is a prime.

It is a super-2 number, since 2×113303402421² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 113303402391 and 113303402400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113303402431) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 28998150 + ... + 29002056.

It is an arithmetic number, because the mean of its divisors is an integer number (2674197504).

Almost surely, 2^113303402421 is an apocalyptic number.

113303402421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

113303402421 is a deficient number, since it is larger than the sum of its proper divisors (57845237835).

113303402421 is a wasteful number, since it uses less digits than its factorization.

113303402421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4262.

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 113303402421 its reverse (124204303311), we get a palindrome (237507705732).

The spelling of 113303402421 in words is "one hundred thirteen billion, three hundred three million, four hundred two thousand, four hundred twenty-one".