10123021291 has 2 divisors, whose sum is σ = 10123021292. Its totient is φ = 10123021290.

The previous prime is 10123021247. The next prime is 10123021301. The reversal of 10123021291 is 19212032101.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 10123021291 - 2⁹ = 10123020779 is a prime.

It is not a weakly prime, because it can be changed into another prime (10123021691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5061510645 + 5061510646.

It is an arithmetic number, because the mean of its divisors is an integer number (5061510646).

Almost surely, 2^10123021291 is an apocalyptic number.

10123021291 is a deficient number, since it is larger than the sum of its proper divisors (1).

10123021291 is an equidigital number, since it uses as much as digits as its factorization.

10123021291 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 10123021291 its reverse (19212032101), we get a palindrome (29335053392).

The spelling of 10123021291 in words is "ten billion, one hundred twenty-three million, twenty-one thousand, two hundred ninety-one".