211213213121879 has 2 divisors, whose sum is σ = 211213213121880. Its totient is φ = 211213213121878.

The previous prime is 211213213121861. The next prime is 211213213122071. The reversal of 211213213121879 is 978121312312112.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 211213213121879 - 2¹² = 211213213117783 is a prime.

It is a super-2 number, since 2×211213213121879² (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 (211213213121479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105606606560939 + 105606606560940.

It is an arithmetic number, because the mean of its divisors is an integer number (105606606560940).

Almost surely, 2^{211213213121879} is an apocalyptic number.

211213213121879 is a deficient number, since it is larger than the sum of its proper divisors (1).

211213213121879 is an equidigital number, since it uses as much as digits as its factorization.

211213213121879 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 72576, while the sum is 44.

The spelling of 211213213121879 in words is "two hundred eleven trillion, two hundred thirteen billion, two hundred thirteen million, one hundred twenty-one thousand, eight hundred seventy-nine".