1472238221 has 2 divisors, whose sum is σ = 1472238222. Its totient is φ = 1472238220.

The previous prime is 1472238203. The next prime is 1472238239. The reversal of 1472238221 is 1228322741.

It is a balanced prime because it is at equal distance from previous prime (1472238203) and next prime (1472238239).

It can be written as a sum of positive squares in only one way, i.e., 1350930025 + 121308196 = 36755^2 + 11014^2 .

It is a cyclic number.

It is not a de Polignac number, because 1472238221 - 2²² = 1468043917 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1472238281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 736119110 + 736119111.

It is an arithmetic number, because the mean of its divisors is an integer number (736119111).

Almost surely, 2^1472238221 is an apocalyptic number.

It is an amenable number.

1472238221 is a deficient number, since it is larger than the sum of its proper divisors (1).

1472238221 is an equidigital number, since it uses as much as digits as its factorization.

1472238221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10752, while the sum is 32.

The square root of 1472238221 is about 38369.7565929209. The cubic root of 1472238221 is about 1137.6081535614.

The spelling of 1472238221 in words is "one billion, four hundred seventy-two million, two hundred thirty-eight thousand, two hundred twenty-one".