2122221110121 has 24 divisors (see below), whose sum is σ = 3504039162624. Its totient is φ = 1212458921280.

The previous prime is 2122221110101. The next prime is 2122221110123. The reversal of 2122221110121 is 1210111222212.

2122221110121 is a `hidden beast` number, since 212 + 2 + 221 + 110 + 121 = 666.

It is not a de Polignac number, because 2122221110121 - 2²⁶ = 2122154001257 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2122221110094 and 2122221110103.

It is not an unprimeable number, because it can be changed into a prime (2122221110123) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2994801 + ... + 3635006.

It is an arithmetic number, because the mean of its divisors is an integer number (146001631776).

Almost surely, 2^{2122221110121} is an apocalyptic number.

2122221110121 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2122221110121 is a deficient number, since it is larger than the sum of its proper divisors (1381818052503).

2122221110121 is a wasteful number, since it uses less digits than its factorization.

2122221110121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6634901 (or 6634898 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 2122221110121 its reverse (1210111222212), we get a palindrome (3332332332333).

The spelling of 2122221110121 in words is "two trillion, one hundred twenty-two billion, two hundred twenty-one million, one hundred ten thousand, one hundred twenty-one".