212112010997 has 2 divisors, whose sum is σ = 212112010998. Its totient is φ = 212112010996.

The previous prime is 212112010937. The next prime is 212112011071. The reversal of 212112010997 is 799010211212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 189359003716 + 22753007281 = 435154^2 + 150841^2 .

It is a cyclic number.

It is not a de Polignac number, because 212112010997 - 2⁶ = 212112010933 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212112010927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106056005498 + 106056005499.

It is an arithmetic number, because the mean of its divisors is an integer number (106056005499).

Almost surely, 2^212112010997 is an apocalyptic number.

It is an amenable number.

212112010997 is a deficient number, since it is larger than the sum of its proper divisors (1).

212112010997 is an equidigital number, since it uses as much as digits as its factorization.

212112010997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4536, while the sum is 35.

The spelling of 212112010997 in words is "two hundred twelve billion, one hundred twelve million, ten thousand, nine hundred ninety-seven".