221034131 has 4 divisors (see below), whose sum is σ = 221959200. Its totient is φ = 220109064.

The previous prime is 221034113. The next prime is 221034133. The reversal of 221034131 is 131430122.

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

It is a cyclic number.

It is not a de Polignac number, because 221034131 - 2⁶ = 221034067 is a prime.

It is a super-2 number, since 2×221034131² = 97712174133850322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221034133) 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, 462176 + ... + 462653.

It is an arithmetic number, because the mean of its divisors is an integer number (55489800).

Almost surely, 2^221034131 is an apocalyptic number.

221034131 is a deficient number, since it is larger than the sum of its proper divisors (925069).

221034131 is an equidigital number, since it uses as much as digits as its factorization.

221034131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 925068.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 221034131 is about 14867.2166527565. The cubic root of 221034131 is about 604.6254822979.

Adding to 221034131 its reverse (131430122), we get a palindrome (352464253).

The spelling of 221034131 in words is "two hundred twenty-one million, thirty-four thousand, one hundred thirty-one".