22011222222121 has 32 divisors (see below), whose sum is σ = 24162086108160. Its totient is φ = 19885830868800.

The previous prime is 22011222222079. The next prime is 22011222222161. The reversal of 22011222222121 is 12122222211022.

It is a cyclic number.

It is not a de Polignac number, because 22011222222121 - 2¹¹ = 22011222220073 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22011222222092 and 22011222222101.

It is not an unprimeable number, because it can be changed into a prime (22011222222161) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1495625055 + ... + 1495639771.

It is an arithmetic number, because the mean of its divisors is an integer number (755065190880).

Almost surely, 2^{22011222222121} is an apocalyptic number.

It is an amenable number.

22011222222121 is a deficient number, since it is larger than the sum of its proper divisors (2150863886039).

22011222222121 is a wasteful number, since it uses less digits than its factorization.

22011222222121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16365.

The product of its (nonzero) digits is 512, while the sum is 22.

Adding to 22011222222121 its reverse (12122222211022), we get a palindrome (34133444433143).

The spelling of 22011222222121 in words is "twenty-two trillion, eleven billion, two hundred twenty-two million, two hundred twenty-two thousand, one hundred twenty-one".