2122222221111 has 16 divisors (see below), whose sum is σ = 2835722461824. Its totient is φ = 1411770563424.

The previous prime is 2122222221083. The next prime is 2122222221121. The reversal of 2122222221111 is 1111222222212.

It is not a de Polignac number, because 2122222221111 - 2⁵ = 2122222221079 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2122222221121) 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, 3669996 + ... + 4208718.

It is an arithmetic number, because the mean of its divisors is an integer number (177232653864).

Almost surely, 2^{2122222221111} is an apocalyptic number.

2122222221111 is a deficient number, since it is larger than the sum of its proper divisors (713500240713).

2122222221111 is a wasteful number, since it uses less digits than its factorization.

2122222221111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 541550.

The product of its digits is 256, while the sum is 21.

Adding to 2122222221111 its reverse (1111222222212), we get a palindrome (3233444443323).

The spelling of 2122222221111 in words is "two trillion, one hundred twenty-two billion, two hundred twenty-two million, two hundred twenty-one thousand, one hundred eleven".