121120122121 has 4 divisors (see below), whose sum is σ = 121288579200. Its totient is φ = 120951665044.

The previous prime is 121120122083. The next prime is 121120122127. The reversal of 121120122121 is 121221021121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 121120122121 - 2¹³ = 121120113929 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121120122095 and 121120122104.

It is not an unprimeable number, because it can be changed into a prime (121120122127) 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, 84227461 + ... + 84228898.

It is an arithmetic number, because the mean of its divisors is an integer number (30322144800).

Almost surely, 2^121120122121 is an apocalyptic number.

It is an amenable number.

121120122121 is a deficient number, since it is larger than the sum of its proper divisors (168457079).

121120122121 is an equidigital number, since it uses as much as digits as its factorization.

121120122121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168457078.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 121120122121 its reverse (121221021121), we get a palindrome (242341143242).

The spelling of 121120122121 in words is "one hundred twenty-one billion, one hundred twenty million, one hundred twenty-two thousand, one hundred twenty-one".