1344626221 has 2 divisors, whose sum is σ = 1344626222. Its totient is φ = 1344626220.

The previous prime is 1344626167. The next prime is 1344626263. The reversal of 1344626221 is 1226264431.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 868775625 + 475850596 = 29475^2 + 21814^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1344626221 is a prime.

It is a super-3 number, since 3×1344626221³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1344626281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 672313110 + 672313111.

It is an arithmetic number, because the mean of its divisors is an integer number (672313111).

Almost surely, 2^1344626221 is an apocalyptic number.

It is an amenable number.

1344626221 is a deficient number, since it is larger than the sum of its proper divisors (1).

1344626221 is an equidigital number, since it uses as much as digits as its factorization.

1344626221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13824, while the sum is 31.

The square root of 1344626221 is about 36669.1453540985. The cubic root of 1344626221 is about 1103.7410423771.

The spelling of 1344626221 in words is "one billion, three hundred forty-four million, six hundred twenty-six thousand, two hundred twenty-one".