121023133121 has 8 divisors (see below), whose sum is σ = 132027758784. Its totient is φ = 110018927920.

The previous prime is 121023133111. The next prime is 121023133163. The reversal of 121023133121 is 121331320121.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 121023133121 - 2³⁰ = 119949391297 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 121023133093 and 121023133102.

It is not an unprimeable number, because it can be changed into a prime (121023133111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1025651 + ... + 1137543.

It is an arithmetic number, because the mean of its divisors is an integer number (16503469848).

Almost surely, 2^121023133121 is an apocalyptic number.

121023133121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

121023133121 is a deficient number, since it is larger than the sum of its proper divisors (11004625663).

121023133121 is a wasteful number, since it uses less digits than its factorization.

121023133121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210231.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 121023133121 its reverse (121331320121), we get a palindrome (242354453242).

The spelling of 121023133121 in words is "one hundred twenty-one billion, twenty-three million, one hundred thirty-three thousand, one hundred twenty-one".