202210121211997 has 2 divisors, whose sum is σ = 202210121211998. Its totient is φ = 202210121211996.

The previous prime is 202210121211929. The next prime is 202210121212031. The reversal of 202210121211997 is 799112121012202.

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., 167974586171001 + 34235535040996 = 12960501^2 + 5851114^2 .

It is a cyclic number.

It is not a de Polignac number, because 202210121211997 - 2³⁵ = 202175761473629 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (202210121211907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101105060605998 + 101105060605999.

It is an arithmetic number, because the mean of its divisors is an integer number (101105060605999).

Almost surely, 2^{202210121211997} is an apocalyptic number.

It is an amenable number.

202210121211997 is a deficient number, since it is larger than the sum of its proper divisors (1).

202210121211997 is an equidigital number, since it uses as much as digits as its factorization.

202210121211997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18144, while the sum is 40.

The spelling of 202210121211997 in words is "two hundred two trillion, two hundred ten billion, one hundred twenty-one million, two hundred eleven thousand, nine hundred ninety-seven".