1208212979 has 2 divisors, whose sum is σ = 1208212980. Its totient is φ = 1208212978.

The previous prime is 1208212961. The next prime is 1208212981. The reversal of 1208212979 is 9792128021.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1208212979 - 2¹⁶ = 1208147443 is a prime.

It is a Sophie Germain prime.

Together with 1208212981, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1208212079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 604106489 + 604106490.

It is an arithmetic number, because the mean of its divisors is an integer number (604106490).

Almost surely, 2^1208212979 is an apocalyptic number.

1208212979 is a deficient number, since it is larger than the sum of its proper divisors (1).

1208212979 is an equidigital number, since it uses as much as digits as its factorization.

1208212979 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36288, while the sum is 41.

The square root of 1208212979 is about 34759.3581500004. The cubic root of 1208212979 is about 1065.0773905424.

The spelling of 1208212979 in words is "one billion, two hundred eight million, two hundred twelve thousand, nine hundred seventy-nine".