10203121079 has 2 divisors, whose sum is σ = 10203121080. Its totient is φ = 10203121078.

The previous prime is 10203121043. The next prime is 10203121139. The reversal of 10203121079 is 97012130201.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 10203121079 - 2²⁴ = 10186343863 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10203121039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5101560539 + 5101560540.

It is an arithmetic number, because the mean of its divisors is an integer number (5101560540).

Almost surely, 2^10203121079 is an apocalyptic number.

10203121079 is a deficient number, since it is larger than the sum of its proper divisors (1).

10203121079 is an equidigital number, since it uses as much as digits as its factorization.

10203121079 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 756, while the sum is 26.

The spelling of 10203121079 in words is "ten billion, two hundred three million, one hundred twenty-one thousand, seventy-nine".