10121123239 has 2 divisors, whose sum is σ = 10121123240. Its totient is φ = 10121123238.

The previous prime is 10121123231. The next prime is 10121123263. The reversal of 10121123239 is 93232112101.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 10121123239 - 2³ = 10121123231 is a prime.

It is a super-2 number, since 2×10121123239² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10121123231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5060561619 + 5060561620.

It is an arithmetic number, because the mean of its divisors is an integer number (5060561620).

Almost surely, 2^10121123239 is an apocalyptic number.

10121123239 is a deficient number, since it is larger than the sum of its proper divisors (1).

10121123239 is an equidigital number, since it uses as much as digits as its factorization.

10121123239 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 25.

The spelling of 10121123239 in words is "ten billion, one hundred twenty-one million, one hundred twenty-three thousand, two hundred thirty-nine".