121000222011121 has 4 divisors (see below), whose sum is σ = 121000902764544. Its totient is φ = 120999541257700.

The previous prime is 121000222011061. The next prime is 121000222011187. The reversal of 121000222011121 is 121110222000121.

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 121000222011121 - 2³⁷ = 120862783057649 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121000222011095 and 121000222011104.

It is not an unprimeable number, because it can be changed into a prime (121000222011421) 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, 340110025 + ... + 340465606.

It is an arithmetic number, because the mean of its divisors is an integer number (30250225691136).

Almost surely, 2^{121000222011121} is an apocalyptic number.

It is an amenable number.

121000222011121 is a deficient number, since it is larger than the sum of its proper divisors (680753423).

121000222011121 is an equidigital number, since it uses as much as digits as its factorization.

121000222011121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 680753422.

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

Adding to 121000222011121 its reverse (121110222000121), we get a palindrome (242110444011242).

The spelling of 121000222011121 in words is "one hundred twenty-one trillion, two hundred twenty-two million, eleven thousand, one hundred twenty-one".