2121122233111 has 24 divisors (see below), whose sum is σ = 2597429479680. Its totient is φ = 1722324228912.

The previous prime is 2121122233103. The next prime is 2121122233121. The reversal of 2121122233111 is 1113322211212.

It is a happy number.

It is not a de Polignac number, because 2121122233111 - 2³ = 2121122233103 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121122233121) 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, 21926130 + ... + 22022656.

It is an arithmetic number, because the mean of its divisors is an integer number (108226228320).

Almost surely, 2^{2121122233111} is an apocalyptic number.

2121122233111 is a deficient number, since it is larger than the sum of its proper divisors (476307246569).

2121122233111 is a wasteful number, since it uses less digits than its factorization.

2121122233111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120163 (or 120156 counting only the distinct ones).

The product of its digits is 288, while the sum is 22.

Adding to 2121122233111 its reverse (1113322211212), we get a palindrome (3234444444323).

The spelling of 2121122233111 in words is "two trillion, one hundred twenty-one billion, one hundred twenty-two million, two hundred thirty-three thousand, one hundred eleven".