3147111017021 has 2 divisors, whose sum is σ = 3147111017022. Its totient is φ = 3147111017020.

The previous prime is 3147111016991. The next prime is 3147111017033. The reversal of 3147111017021 is 1207101117413.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3143777224900 + 3333792121 = 1773070^2 + 57739^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3147111017021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3147111017051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1573555508510 + 1573555508511.

It is an arithmetic number, because the mean of its divisors is an integer number (1573555508511).

Almost surely, 2^{3147111017021} is an apocalyptic number.

It is an amenable number.

3147111017021 is a deficient number, since it is larger than the sum of its proper divisors (1).

3147111017021 is an equidigital number, since it uses as much as digits as its factorization.

3147111017021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1176, while the sum is 29.

The spelling of 3147111017021 in words is "three trillion, one hundred forty-seven billion, one hundred eleven million, seventeen thousand, twenty-one".