10122123121 has 4 divisors (see below), whose sum is σ = 11042316144. Its totient is φ = 9201930100.

The previous prime is 10122123079. The next prime is 10122123127. The reversal of 10122123121 is 12132122101.

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.

It is a de Polignac number, because none of the positive numbers 2^k-10122123121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10122123095 and 10122123104.

It is not an unprimeable number, because it can be changed into a prime (10122123127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 460096495 + ... + 460096516.

It is an arithmetic number, because the mean of its divisors is an integer number (2760579036).

Almost surely, 2^10122123121 is an apocalyptic number.

10122123121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

10122123121 is a deficient number, since it is larger than the sum of its proper divisors (920193023).

10122123121 is an equidigital number, since it uses as much as digits as its factorization.

10122123121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 920193022.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 10122123121 its reverse (12132122101), we get a palindrome (22254245222).

The spelling of 10122123121 in words is "ten billion, one hundred twenty-two million, one hundred twenty-three thousand, one hundred twenty-one".