121320120310123 has 32 divisors (see below), whose sum is σ = 144224785912320. Its totient is φ = 99849879360000.

The previous prime is 121320120310073. The next prime is 121320120310127. The reversal of 121320120310123 is 321013021023121.

It is not a de Polignac number, because 121320120310123 - 2¹³ = 121320120301931 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121320120310094 and 121320120310103.

It is not an unprimeable number, because it can be changed into a prime (121320120310127) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 24693088 + ... + 29195698.

It is an arithmetic number, because the mean of its divisors is an integer number (4507024559760).

Almost surely, 2^{121320120310123} is an apocalyptic number.

121320120310123 is a deficient number, since it is larger than the sum of its proper divisors (22904665602197).

121320120310123 is a wasteful number, since it uses less digits than its factorization.

121320120310123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4503379.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 121320120310123 its reverse (321013021023121), we get a palindrome (442333141333244).

The spelling of 121320120310123 in words is "one hundred twenty-one trillion, three hundred twenty billion, one hundred twenty million, three hundred ten thousand, one hundred twenty-three".