121121132123 has 16 divisors (see below), whose sum is σ = 123586214400. Its totient is φ = 118688008320.

The previous prime is 121121132047. The next prime is 121121132131. The reversal of 121121132123 is 321231121121.

It is a cyclic number.

It is not a de Polignac number, because 121121132123 - 2⁸ = 121121131867 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121121132095 and 121121132104.

It is not an unprimeable number, because it can be changed into a prime (121121132023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3584873 + ... + 3618501.

It is an arithmetic number, because the mean of its divisors is an integer number (7724138400).

Almost surely, 2^121121132123 is an apocalyptic number.

121121132123 is a deficient number, since it is larger than the sum of its proper divisors (2465082277).

121121132123 is a wasteful number, since it uses less digits than its factorization.

121121132123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34102.

The product of its digits is 144, while the sum is 20.

Adding to 121121132123 its reverse (321231121121), we get a palindrome (442352253244).

The spelling of 121121132123 in words is "one hundred twenty-one billion, one hundred twenty-one million, one hundred thirty-two thousand, one hundred twenty-three".