211012099979 has 2 divisors, whose sum is σ = 211012099980. Its totient is φ = 211012099978.

The previous prime is 211012099957. The next prime is 211012099993. The reversal of 211012099979 is 979990210112.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 211012099979 - 2¹² = 211012095883 is a prime.

It is a super-2 number, since 2×211012099979² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (211012099379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105506049989 + 105506049990.

It is an arithmetic number, because the mean of its divisors is an integer number (105506049990).

Almost surely, 2^211012099979 is an apocalyptic number.

211012099979 is a deficient number, since it is larger than the sum of its proper divisors (1).

211012099979 is an equidigital number, since it uses as much as digits as its factorization.

211012099979 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 183708, while the sum is 50.

The spelling of 211012099979 in words is "two hundred eleven billion, twelve million, ninety-nine thousand, nine hundred seventy-nine".