10123101121 has 4 divisors (see below), whose sum is σ = 11569258432. Its totient is φ = 8676943812.

The previous prime is 10123101073. The next prime is 10123101139. The reversal of 10123101121 is 12110132101.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 12110132101 = 211 ⋅57393991.

It is a cyclic number.

It is not a de Polignac number, because 10123101121 - 2²⁹ = 9586230209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10123101161) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 723078645 + ... + 723078658.

It is an arithmetic number, because the mean of its divisors is an integer number (2892314608).

Almost surely, 2^10123101121 is an apocalyptic number.

It is an amenable number.

10123101121 is a deficient number, since it is larger than the sum of its proper divisors (1446157311).

10123101121 is an equidigital number, since it uses as much as digits as its factorization.

10123101121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1446157310.

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 10123101121 its reverse (12110132101), we get a palindrome (22233233222).

The spelling of 10123101121 in words is "ten billion, one hundred twenty-three million, one hundred one thousand, one hundred twenty-one".