1350622621921 has 2 divisors, whose sum is σ = 1350622621922. Its totient is φ = 1350622621920.

The previous prime is 1350622621913. The next prime is 1350622622023. The reversal of 1350622621921 is 1291262260531.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 804678967521 + 545943654400 = 897039^2 + 738880^2 .

It is a cyclic number.

It is not a de Polignac number, because 1350622621921 - 2³ = 1350622621913 is a prime.

It is not a weakly prime, because it can be changed into another prime (1350622621121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 675311310960 + 675311310961.

It is an arithmetic number, because the mean of its divisors is an integer number (675311310961).

Almost surely, 2^{1350622621921} is an apocalyptic number.

It is an amenable number.

1350622621921 is a deficient number, since it is larger than the sum of its proper divisors (1).

1350622621921 is an equidigital number, since it uses as much as digits as its factorization.

1350622621921 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 77760, while the sum is 40.

The spelling of 1350622621921 in words is "one trillion, three hundred fifty billion, six hundred twenty-two million, six hundred twenty-one thousand, nine hundred twenty-one".