122220011111 has 8 divisors (see below), whose sum is σ = 133333960464. Its totient is φ = 111106568320.

The previous prime is 122220011107. The next prime is 122220011153. The reversal of 122220011111 is 111110022221.

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

It is not a de Polignac number, because 122220011111 - 2² = 122220011107 is a prime.

It is a super-2 number, since 2×122220011111² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122220011161) 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, 522575 + ... + 719391.

It is an arithmetic number, because the mean of its divisors is an integer number (16666745058).

Almost surely, 2^122220011111 is an apocalyptic number.

122220011111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

122220011111 is a deficient number, since it is larger than the sum of its proper divisors (11113949353).

122220011111 is a wasteful number, since it uses less digits than its factorization.

122220011111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253281.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 122220011111 its reverse (111110022221), we get a palindrome (233330033332).

The spelling of 122220011111 in words is "one hundred twenty-two billion, two hundred twenty million, eleven thousand, one hundred eleven".