211212022020997 has 2 divisors, whose sum is σ = 211212022020998. Its totient is φ = 211212022020996.

The previous prime is 211212022020953. The next prime is 211212022021043. The reversal of 211212022020997 is 799020220212112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 127603931108481 + 83608090912516 = 11296191^2 + 9143746^2 .

It is a cyclic number.

It is not a de Polignac number, because 211212022020997 - 2¹⁵ = 211212021988229 is a prime.

It is a super-2 number, since 2×211212022020997² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211212022020907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105606011010498 + 105606011010499.

It is an arithmetic number, because the mean of its divisors is an integer number (105606011010499).

Almost surely, 2^{211212022020997} is an apocalyptic number.

It is an amenable number.

211212022020997 is a deficient number, since it is larger than the sum of its proper divisors (1).

211212022020997 is an equidigital number, since it uses as much as digits as its factorization.

211212022020997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36288, while the sum is 40.

The spelling of 211212022020997 in words is "two hundred eleven trillion, two hundred twelve billion, twenty-two million, twenty thousand, nine hundred ninety-seven".