212020979399 has 2 divisors, whose sum is σ = 212020979400. Its totient is φ = 212020979398.

The previous prime is 212020979383. The next prime is 212020979411. The reversal of 212020979399 is 993979020212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 212020979399 - 2⁴ = 212020979383 is a prime.

It is a super-3 number, since 3×212020979399³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 212020979399.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212020979329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106010489699 + 106010489700.

It is an arithmetic number, because the mean of its divisors is an integer number (106010489700).

Almost surely, 2^212020979399 is an apocalyptic number.

212020979399 is a deficient number, since it is larger than the sum of its proper divisors (1).

212020979399 is an equidigital number, since it uses as much as digits as its factorization.

212020979399 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1102248, while the sum is 53.

The spelling of 212020979399 in words is "two hundred twelve billion, twenty million, nine hundred seventy-nine thousand, three hundred ninety-nine".