1330221868957 has 2 divisors, whose sum is σ = 1330221868958. Its totient is φ = 1330221868956.

The previous prime is 1330221868949. The next prime is 1330221868967. The reversal of 1330221868957 is 7598681220331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1296840386521 + 33381482436 = 1138789^2 + 182706^2 .

It is a cyclic number.

It is not a de Polignac number, because 1330221868957 - 2³ = 1330221868949 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1330221868898 and 1330221868907.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1330221868967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 665110934478 + 665110934479.

It is an arithmetic number, because the mean of its divisors is an integer number (665110934479).

Almost surely, 2^{1330221868957} is an apocalyptic number.

It is an amenable number.

1330221868957 is a deficient number, since it is larger than the sum of its proper divisors (1).

1330221868957 is an equidigital number, since it uses as much as digits as its factorization.

1330221868957 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4354560, while the sum is 55.

The spelling of 1330221868957 in words is "one trillion, three hundred thirty billion, two hundred twenty-one million, eight hundred sixty-eight thousand, nine hundred fifty-seven".