1220200200997 has 2 divisors, whose sum is σ = 1220200200998. Its totient is φ = 1220200200996.

The previous prime is 1220200200977. The next prime is 1220200201027. The reversal of 1220200200997 is 7990020020221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1017124692676 + 203075508321 = 1008526^2 + 450639^2 .

It is a cyclic number.

It is not a de Polignac number, because 1220200200997 - 2³⁵ = 1185840462629 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1220200200917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610100100498 + 610100100499.

It is an arithmetic number, because the mean of its divisors is an integer number (610100100499).

Almost surely, 2^{1220200200997} is an apocalyptic number.

It is an amenable number.

1220200200997 is a deficient number, since it is larger than the sum of its proper divisors (1).

1220200200997 is an equidigital number, since it uses as much as digits as its factorization.

1220200200997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9072, while the sum is 34.

The spelling of 1220200200997 in words is "one trillion, two hundred twenty billion, two hundred million, two hundred thousand, nine hundred ninety-seven".