113001022021 has 4 divisors (see below), whose sum is σ = 113001698700. Its totient is φ = 113000345344.

The previous prime is 113001021983. The next prime is 113001022033. The reversal of 113001022021 is 120220100311.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 120220100311 = 157 ⋅765733123.

It can be written as a sum of positive squares in 2 ways, for example, as 25526452900 + 87474569121 = 159770^2 + 295761^2 .

It is a cyclic number.

It is not a de Polignac number, because 113001022021 - 2²¹ = 112998924869 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 113001021992 and 113001022010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113001029021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 111615 + ... + 488323.

It is an arithmetic number, because the mean of its divisors is an integer number (28250424675).

Almost surely, 2^113001022021 is an apocalyptic number.

It is an amenable number.

113001022021 is a deficient number, since it is larger than the sum of its proper divisors (676679).

113001022021 is an equidigital number, since it uses as much as digits as its factorization.

113001022021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 676678.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 113001022021 its reverse (120220100311), we get a palindrome (233221122332).

The spelling of 113001022021 in words is "one hundred thirteen billion, one million, twenty-two thousand, twenty-one".