212266211449 has 2 divisors, whose sum is σ = 212266211450. Its totient is φ = 212266211448.

The previous prime is 212266211441. The next prime is 212266211497. The reversal of 212266211449 is 944112662212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 188588695824 + 23677515625 = 434268^2 + 153875^2 .

It is a cyclic number.

It is not a de Polignac number, because 212266211449 - 2³ = 212266211441 is a prime.

It is not a weakly prime, because it can be changed into another prime (212266211441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106133105724 + 106133105725.

It is an arithmetic number, because the mean of its divisors is an integer number (106133105725).

Almost surely, 2^212266211449 is an apocalyptic number.

It is an amenable number.

212266211449 is a deficient number, since it is larger than the sum of its proper divisors (1).

212266211449 is an equidigital number, since it uses as much as digits as its factorization.

212266211449 is an evil number, because the sum of its binary digits is even.

The product of its digits is 82944, while the sum is 40.

The spelling of 212266211449 in words is "two hundred twelve billion, two hundred sixty-six million, two hundred eleven thousand, four hundred forty-nine".