1220101995617 has 2 divisors, whose sum is σ = 1220101995618. Its totient is φ = 1220101995616.

The previous prime is 1220101995589. The next prime is 1220101995641. The reversal of 1220101995617 is 7165991010221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1183709184256 + 36392811361 = 1087984^2 + 190769^2 .

It is a cyclic number.

It is not a de Polignac number, because 1220101995617 - 2⁸ = 1220101995361 is a prime.

It is not a weakly prime, because it can be changed into another prime (1220101595617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610050997808 + 610050997809.

It is an arithmetic number, because the mean of its divisors is an integer number (610050997809).

Almost surely, 2^{1220101995617} is an apocalyptic number.

It is an amenable number.

1220101995617 is a deficient number, since it is larger than the sum of its proper divisors (1).

1220101995617 is an equidigital number, since it uses as much as digits as its factorization.

1220101995617 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 68040, while the sum is 44.

The spelling of 1220101995617 in words is "one trillion, two hundred twenty billion, one hundred one million, nine hundred ninety-five thousand, six hundred seventeen".