10123010121121 has 4 divisors (see below), whose sum is σ = 10369912807044. Its totient is φ = 9876107435200.

The previous prime is 10123010121101. The next prime is 10123010121127. The reversal of 10123010121121 is 12112101032101.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 2918080481121 + 7204929640000 = 1708239^2 + 2684200^2 .

It is a cyclic number.

It is not a de Polignac number, because 10123010121121 - 2⁵ = 10123010121089 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10123010121095 and 10123010121104.

It is not an unprimeable number, because it can be changed into a prime (10123010121127) 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, 123451342900 + ... + 123451342981.

It is an arithmetic number, because the mean of its divisors is an integer number (2592478201761).

Almost surely, 2^{10123010121121} is an apocalyptic number.

It is an amenable number.

10123010121121 is a deficient number, since it is larger than the sum of its proper divisors (246902685923).

10123010121121 is an equidigital number, since it uses as much as digits as its factorization.

10123010121121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246902685922.

The product of its (nonzero) digits is 24, while the sum is 16.

Adding to 10123010121121 its reverse (12112101032101), we get a palindrome (22235111153222).

The spelling of 10123010121121 in words is "ten trillion, one hundred twenty-three billion, ten million, one hundred twenty-one thousand, one hundred twenty-one".