221044051 has 2 divisors, whose sum is σ = 221044052. Its totient is φ = 221044050.

The previous prime is 221044027. The next prime is 221044069. The reversal of 221044051 is 150440122.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 221044051 - 2⁷ = 221043923 is a prime.

It is not a weakly prime, because it can be changed into another prime (221044091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110522025 + 110522026.

It is an arithmetic number, because the mean of its divisors is an integer number (110522026).

Almost surely, 2^221044051 is an apocalyptic number.

221044051 is a deficient number, since it is larger than the sum of its proper divisors (1).

221044051 is an equidigital number, since it uses as much as digits as its factorization.

221044051 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 221044051 is about 14867.5502689582. The cubic root of 221044051 is about 604.6345273490.

Adding to 221044051 its reverse (150440122), we get a palindrome (371484173).

The spelling of 221044051 in words is "two hundred twenty-one million, forty-four thousand, fifty-one".