221142113 has 4 divisors (see below), whose sum is σ = 221238528. Its totient is φ = 221045700.

The previous prime is 221142073. The next prime is 221142169. The reversal of 221142113 is 311241122.

221142113 is digitally balanced in base 2, 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, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 221142113 - 2⁶ = 221142049 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 221142091 and 221142100.

It is not an unprimeable number, because it can be changed into a prime (221142013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44681 + ... + 49382.

It is an arithmetic number, because the mean of its divisors is an integer number (55309632).

Almost surely, 2^221142113 is an apocalyptic number.

It is an amenable number.

221142113 is a deficient number, since it is larger than the sum of its proper divisors (96415).

221142113 is an equidigital number, since it uses as much as digits as its factorization.

221142113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96414.

The product of its digits is 96, while the sum is 17.

The square root of 221142113 is about 14870.8477566008. The cubic root of 221142113 is about 604.7239256764.

Adding to 221142113 its reverse (311241122), we get a palindrome (532383235).

Subtracting 221142113 from its reverse (311241122), we obtain a palindrome (90099009).

The spelling of 221142113 in words is "two hundred twenty-one million, one hundred forty-two thousand, one hundred thirteen".