10212099979 has 2 divisors, whose sum is σ = 10212099980. Its totient is φ = 10212099978.

The previous prime is 10212099929. The next prime is 10212099983. The reversal of 10212099979 is 97999021201.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 10212099979 - 2¹³ = 10212091787 is a prime.

It is not a weakly prime, because it can be changed into another prime (10212099929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5106049989 + 5106049990.

It is an arithmetic number, because the mean of its divisors is an integer number (5106049990).

Almost surely, 2^10212099979 is an apocalyptic number.

10212099979 is a deficient number, since it is larger than the sum of its proper divisors (1).

10212099979 is an equidigital number, since it uses as much as digits as its factorization.

10212099979 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 49.

The spelling of 10212099979 in words is "ten billion, two hundred twelve million, ninety-nine thousand, nine hundred seventy-nine".