113221441021 has 16 divisors (see below), whose sum is σ = 122450917680. Its totient is φ = 104067187200.

The previous prime is 113221440953. The next prime is 113221441031. The reversal of 113221441021 is 120144122311.

It can be written as a sum of positive squares in 8 ways, for example, as 6154402500 + 107067038521 = 78450^2 + 327211^2 .

It is a cyclic number.

It is not a de Polignac number, because 113221441021 - 2¹⁹ = 113220916733 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 113221440983 and 113221441001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113221441031) 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, 3020631 + ... + 3057883.

It is an arithmetic number, because the mean of its divisors is an integer number (7653182355).

Almost surely, 2^113221441021 is an apocalyptic number.

It is an amenable number.

113221441021 is a deficient number, since it is larger than the sum of its proper divisors (9229476659).

113221441021 is a wasteful number, since it uses less digits than its factorization.

113221441021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38256.

The product of its (nonzero) digits is 384, while the sum is 22.

Adding to 113221441021 its reverse (120144122311), we get a palindrome (233365563332).

The spelling of 113221441021 in words is "one hundred thirteen billion, two hundred twenty-one million, four hundred forty-one thousand, twenty-one".