1000212211979 has 2 divisors, whose sum is σ = 1000212211980. Its totient is φ = 1000212211978.

The previous prime is 1000212211969. The next prime is 1000212212039. The reversal of 1000212211979 is 9791122120001.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1000212211979 - 2¹⁶ = 1000212146443 is a prime.

It is not a weakly prime, because it can be changed into another prime (1000212211919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500106105989 + 500106105990.

It is an arithmetic number, because the mean of its divisors is an integer number (500106105990).

Almost surely, 2^{1000212211979} is an apocalyptic number.

1000212211979 is a deficient number, since it is larger than the sum of its proper divisors (1).

1000212211979 is an equidigital number, since it uses as much as digits as its factorization.

1000212211979 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 1000212211979 in words is "one trillion, two hundred twelve million, two hundred eleven thousand, nine hundred seventy-nine".