122211001111 has 4 divisors (see below), whose sum is σ = 123103052352. Its totient is φ = 121318949872.

The previous prime is 122211001103. The next prime is 122211001141. The reversal of 122211001111 is 111100112221.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 122211001111 - 2³ = 122211001103 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 122211001091 and 122211001100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122211001141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 446025415 + ... + 446025688.

It is an arithmetic number, because the mean of its divisors is an integer number (30775763088).

Almost surely, 2^122211001111 is an apocalyptic number.

122211001111 is a deficient number, since it is larger than the sum of its proper divisors (892051241).

122211001111 is an equidigital number, since it uses as much as digits as its factorization.

122211001111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 892051240.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 122211001111 its reverse (111100112221), we get a palindrome (233311113332).

The spelling of 122211001111 in words is "one hundred twenty-two billion, two hundred eleven million, one thousand, one hundred eleven".