10012121923 has 2 divisors, whose sum is σ = 10012121924. Its totient is φ = 10012121922.

The previous prime is 10012121909. The next prime is 10012121929. The reversal of 10012121923 is 32912121001.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 10012121923 - 2⁹ = 10012121411 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10012121894 and 10012121903.

It is not a weakly prime, because it can be changed into another prime (10012121929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5006060961 + 5006060962.

It is an arithmetic number, because the mean of its divisors is an integer number (5006060962).

Almost surely, 2^10012121923 is an apocalyptic number.

10012121923 is a deficient number, since it is larger than the sum of its proper divisors (1).

10012121923 is an equidigital number, since it uses as much as digits as its factorization.

10012121923 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 22.

Adding to 10012121923 its reverse (32912121001), we get a palindrome (42924242924).

The spelling of 10012121923 in words is "ten billion, twelve million, one hundred twenty-one thousand, nine hundred twenty-three".