11122122122 has 4 divisors (see below), whose sum is σ = 16683183186. Its totient is φ = 5561061060.

The previous prime is 11122122103. The next prime is 11122122127. The reversal of 11122122122 is 22122122111.

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

It can be written as a sum of positive squares in only one way, i.e., 10285813561 + 836308561 = 101419^2 + 28919^2 .

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 11122122122.

It is not an unprimeable number, because it can be changed into a prime (11122122127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2780530529 + ... + 2780530532.

Almost surely, 2^11122122122 is an apocalyptic number.

11122122122 is a deficient number, since it is larger than the sum of its proper divisors (5561061064).

11122122122 is an equidigital number, since it uses as much as digits as its factorization.

11122122122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5561061063.

The product of its digits is 64, while the sum is 17.

Adding to 11122122122 its reverse (22122122111), we get a palindrome (33244244233).

It can be divided in two parts, 111 and 22122122, that multiplied together give a palindrome (2455555542).

The spelling of 11122122122 in words is "eleven billion, one hundred twenty-two million, one hundred twenty-two thousand, one hundred twenty-two".