211202011201997 has 2 divisors, whose sum is σ = 211202011201998. Its totient is φ = 211202011201996.

The previous prime is 211202011201981. The next prime is 211202011202033. The reversal of 211202011201997 is 799102110202112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 205192188369961 + 6009822832036 = 14324531^2 + 2451494^2 .

It is a cyclic number.

It is not a de Polignac number, because 211202011201997 - 2⁴ = 211202011201981 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 211202011201997.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211202011201927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105601005600998 + 105601005600999.

It is an arithmetic number, because the mean of its divisors is an integer number (105601005600999).

Almost surely, 2^{211202011201997} is an apocalyptic number.

It is an amenable number.

211202011201997 is a deficient number, since it is larger than the sum of its proper divisors (1).

211202011201997 is an equidigital number, since it uses as much as digits as its factorization.

211202011201997 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 38.

The spelling of 211202011201997 in words is "two hundred eleven trillion, two hundred two billion, eleven million, two hundred one thousand, nine hundred ninety-seven".