22148526221 has 2 divisors, whose sum is σ = 22148526222. Its totient is φ = 22148526220.

The previous prime is 22148526167. The next prime is 22148526251. The reversal of 22148526221 is 12262584122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21033700900 + 1114825321 = 145030^2 + 33389^2 .

It is a cyclic number.

It is not a de Polignac number, because 22148526221 - 2¹⁸ = 22148264077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22148526251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11074263110 + 11074263111.

It is an arithmetic number, because the mean of its divisors is an integer number (11074263111).

Almost surely, 2^22148526221 is an apocalyptic number.

It is an amenable number.

22148526221 is a deficient number, since it is larger than the sum of its proper divisors (1).

22148526221 is an equidigital number, since it uses as much as digits as its factorization.

22148526221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 30720, while the sum is 35.

The spelling of 22148526221 in words is "twenty-two billion, one hundred forty-eight million, five hundred twenty-six thousand, two hundred twenty-one".