10212120979 has 2 divisors, whose sum is σ = 10212120980. Its totient is φ = 10212120978.

The previous prime is 10212120937. The next prime is 10212121001. The reversal of 10212120979 is 97902121201.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 10212120979 - 2³¹ = 8064637331 is a prime.

It is not a weakly prime, because it can be changed into another prime (10212120179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5106060489 + 5106060490.

It is an arithmetic number, because the mean of its divisors is an integer number (5106060490).

Almost surely, 2^10212120979 is an apocalyptic number.

10212120979 is a deficient number, since it is larger than the sum of its proper divisors (1).

10212120979 is an equidigital number, since it uses as much as digits as its factorization.

10212120979 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 34.

The spelling of 10212120979 in words is "ten billion, two hundred twelve million, one hundred twenty thousand, nine hundred seventy-nine".