211023212010997 has 2 divisors, whose sum is σ = 211023212010998. Its totient is φ = 211023212010996.

The previous prime is 211023212010959. The next prime is 211023212011021. The reversal of 211023212010997 is 799010212320112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 143112196628401 + 67911015382596 = 11962951^2 + 8240814^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-211023212010997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211023212010397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105511606005498 + 105511606005499.

It is an arithmetic number, because the mean of its divisors is an integer number (105511606005499).

Almost surely, 2^{211023212010997} is an apocalyptic number.

It is an amenable number.

211023212010997 is a deficient number, since it is larger than the sum of its proper divisors (1).

211023212010997 is an equidigital number, since it uses as much as digits as its factorization.

211023212010997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27216, while the sum is 40.

The spelling of 211023212010997 in words is "two hundred eleven trillion, twenty-three billion, two hundred twelve million, ten thousand, nine hundred ninety-seven".