221002220051 has 2 divisors, whose sum is σ = 221002220052. Its totient is φ = 221002220050.

The previous prime is 221002219987. The next prime is 221002220053. The reversal of 221002220051 is 150022200122.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 221002220051 - 2⁶ = 221002219987 is a prime.

Together with 221002220053, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (221002220053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110501110025 + 110501110026.

It is an arithmetic number, because the mean of its divisors is an integer number (110501110026).

Almost surely, 2^221002220051 is an apocalyptic number.

221002220051 is a deficient number, since it is larger than the sum of its proper divisors (1).

221002220051 is an equidigital number, since it uses as much as digits as its factorization.

221002220051 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 160, while the sum is 17.

Adding to 221002220051 its reverse (150022200122), we get a palindrome (371024420173).

The spelling of 221002220051 in words is "two hundred twenty-one billion, two million, two hundred twenty thousand, fifty-one".