21222231301 has 2 divisors, whose sum is σ = 21222231302. Its totient is φ = 21222231300.

The previous prime is 21222231269. The next prime is 21222231319. The reversal of 21222231301 is 10313222212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11996820900 + 9225410401 = 109530^2 + 96049^2 .

It is a cyclic number.

It is not a de Polignac number, because 21222231301 - 2⁵ = 21222231269 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21222231391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10611115650 + 10611115651.

It is an arithmetic number, because the mean of its divisors is an integer number (10611115651).

Almost surely, 2^21222231301 is an apocalyptic number.

It is an amenable number.

21222231301 is a deficient number, since it is larger than the sum of its proper divisors (1).

21222231301 is an equidigital number, since it uses as much as digits as its factorization.

21222231301 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 21222231301 its reverse (10313222212), we get a palindrome (31535453513).

The spelling of 21222231301 in words is "twenty-one billion, two hundred twenty-two million, two hundred thirty-one thousand, three hundred one".