121022210221121 has 16 divisors (see below), whose sum is σ = 132061458025728. Its totient is φ = 109989169584000.

The previous prime is 121022210221093. The next prime is 121022210221163. The reversal of 121022210221121 is 121122012220121.

It is a cyclic number.

It is not a de Polignac number, because 121022210221121 - 2¹⁰ = 121022210220097 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 121022210221093 and 121022210221102.

It is not an unprimeable number, because it can be changed into a prime (121022210221181) 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, 1443913211 + ... + 1443997023.

It is an arithmetic number, because the mean of its divisors is an integer number (8253841126608).

Almost surely, 2^{121022210221121} is an apocalyptic number.

121022210221121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

121022210221121 is a deficient number, since it is larger than the sum of its proper divisors (11039247804607).

121022210221121 is a wasteful number, since it uses less digits than its factorization.

121022210221121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119272.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 121022210221121 its reverse (121122012220121), we get a palindrome (242144222441242).

The spelling of 121022210221121 in words is "one hundred twenty-one trillion, twenty-two billion, two hundred ten million, two hundred twenty-one thousand, one hundred twenty-one".