221426264203 has 2 divisors, whose sum is σ = 221426264204. Its totient is φ = 221426264202.

The previous prime is 221426264179. The next prime is 221426264207. The reversal of 221426264203 is 302462624122.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 221426264203 - 2³³ = 212836329611 is a prime.

It is not a weakly prime, because it can be changed into another prime (221426264207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110713132101 + 110713132102.

It is an arithmetic number, because the mean of its divisors is an integer number (110713132102).

Almost surely, 2^221426264203 is an apocalyptic number.

221426264203 is a deficient number, since it is larger than the sum of its proper divisors (1).

221426264203 is an equidigital number, since it uses as much as digits as its factorization.

221426264203 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 55296, while the sum is 34.

Adding to 221426264203 its reverse (302462624122), we get a palindrome (523888888325).

The spelling of 221426264203 in words is "two hundred twenty-one billion, four hundred twenty-six million, two hundred sixty-four thousand, two hundred three".