10123112122 has 4 divisors (see below), whose sum is σ = 15184668186. Its totient is φ = 5061556060.

The previous prime is 10123112101. The next prime is 10123112123. The reversal of 10123112122 is 22121132101.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 5377142241 + 4745969881 = 73329^2 + 68891^2 .

It is a junction number, because it is equal to n+sod(n) for n = 10123112096 and 10123112105.

It is not an unprimeable number, because it can be changed into a prime (10123112123) 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 as a sum of consecutive naturals, namely, 2530778029 + ... + 2530778032.

Almost surely, 2^10123112122 is an apocalyptic number.

10123112122 is a deficient number, since it is larger than the sum of its proper divisors (5061556064).

10123112122 is an equidigital number, since it uses as much as digits as its factorization.

10123112122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5061556063.

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

Adding to 10123112122 its reverse (22121132101), we get a palindrome (32244244223).

The spelling of 10123112122 in words is "ten billion, one hundred twenty-three million, one hundred twelve thousand, one hundred twenty-two".