113221221142 has 4 divisors (see below), whose sum is σ = 169831831716. Its totient is φ = 56610610570.

The previous prime is 113221221137. The next prime is 113221221151. The reversal of 113221221142 is 241122122311.

113221221142 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28305305284 + ... + 28305305287.

It is an arithmetic number, because the mean of its divisors is an integer number (42457957929).

Almost surely, 2^113221221142 is an apocalyptic number.

113221221142 is a deficient number, since it is larger than the sum of its proper divisors (56610610574).

113221221142 is an equidigital number, since it uses as much as digits as its factorization.

113221221142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56610610573.

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

Adding to 113221221142 its reverse (241122122311), we get a palindrome (354343343453).

The spelling of 113221221142 in words is "one hundred thirteen billion, two hundred twenty-one million, two hundred twenty-one thousand, one hundred forty-two".