113211556421 has 8 divisors (see below), whose sum is σ = 116946528000. Its totient is φ = 109481771520.

The previous prime is 113211556391. The next prime is 113211556427. The reversal of 113211556421 is 124655112311.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 113211556421 - 2⁶ = 113211556357 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113211556427) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1252271 + ... + 1339628.

It is an arithmetic number, because the mean of its divisors is an integer number (14618316000).

Almost surely, 2^113211556421 is an apocalyptic number.

It is an amenable number.

113211556421 is a deficient number, since it is larger than the sum of its proper divisors (3734971579).

113211556421 is a wasteful number, since it uses less digits than its factorization.

113211556421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2593339.

The product of its digits is 7200, while the sum is 32.

Adding to 113211556421 its reverse (124655112311), we get a palindrome (237866668732).

The spelling of 113211556421 in words is "one hundred thirteen billion, two hundred eleven million, five hundred fifty-six thousand, four hundred twenty-one".