113233312021 has 2 divisors, whose sum is σ = 113233312022. Its totient is φ = 113233312020.

The previous prime is 113233312013. The next prime is 113233312033. The reversal of 113233312021 is 120213332311.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 93123235921 + 20110076100 = 305161^2 + 141810^2 .

It is a cyclic number.

It is not a de Polignac number, because 113233312021 - 2³ = 113233312013 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 113233311983 and 113233312001.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (113233312121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56616656010 + 56616656011.

It is an arithmetic number, because the mean of its divisors is an integer number (56616656011).

Almost surely, 2^113233312021 is an apocalyptic number.

It is an amenable number.

113233312021 is a deficient number, since it is larger than the sum of its proper divisors (1).

113233312021 is an equidigital number, since it uses as much as digits as its factorization.

113233312021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 113233312021 its reverse (120213332311), we get a palindrome (233446644332).

The spelling of 113233312021 in words is "one hundred thirteen billion, two hundred thirty-three million, three hundred twelve thousand, twenty-one".