2122021210997 has 2 divisors, whose sum is σ = 2122021210998. Its totient is φ = 2122021210996.

The previous prime is 2122021210993. The next prime is 2122021211071. The reversal of 2122021210997 is 7990121202212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1217913095281 + 904108115716 = 1103591^2 + 950846^2 .

It is a cyclic number.

It is not a de Polignac number, because 2122021210997 - 2² = 2122021210993 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2122021210997.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2122021210993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1061010605498 + 1061010605499.

It is an arithmetic number, because the mean of its divisors is an integer number (1061010605499).

Almost surely, 2^{2122021210997} is an apocalyptic number.

It is an amenable number.

2122021210997 is a deficient number, since it is larger than the sum of its proper divisors (1).

2122021210997 is an equidigital number, since it uses as much as digits as its factorization.

2122021210997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18144, while the sum is 38.

The spelling of 2122021210997 in words is "two trillion, one hundred twenty-two billion, twenty-one million, two hundred ten thousand, nine hundred ninety-seven".