1122222122211 has 8 divisors (see below), whose sum is σ = 1547892582480. Its totient is φ = 722349871712.

The previous prime is 1122222122183. The next prime is 1122222122233. The reversal of 1122222122211 is 1122212222211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1122222122211 - 2¹⁷ = 1122221991139 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1122222122611) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6449552340 + ... + 6449552513.

It is an arithmetic number, because the mean of its divisors is an integer number (193486572810).

Almost surely, 2^{1122222122211} is an apocalyptic number.

1122222122211 is a deficient number, since it is larger than the sum of its proper divisors (425670460269).

1122222122211 is a wasteful number, since it uses less digits than its factorization.

1122222122211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12899104885.

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

Adding to 1122222122211 its reverse (1122212222211), we get a palindrome (2244434344422).

It can be divided in two parts, 11 and 22222122211, that added together give a palindrome (22222122222).

The spelling of 1122222122211 in words is "one trillion, one hundred twenty-two billion, two hundred twenty-two million, one hundred twenty-two thousand, two hundred eleven".