11112212122 has 32 divisors (see below), whose sum is σ = 18273340800. Its totient is φ = 5026152000.

The previous prime is 11112212101. The next prime is 11112212123. The reversal of 11112212122 is 22121221111.

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

It is a junction number, because it is equal to n+sod(n) for n = 11112212096 and 11112212105.

It is not an unprimeable number, because it can be changed into a prime (11112212123) 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, 4354747 + ... + 4357297.

It is an arithmetic number, because the mean of its divisors is an integer number (571041900).

Almost surely, 2^11112212122 is an apocalyptic number.

11112212122 is a deficient number, since it is larger than the sum of its proper divisors (7161128678).

11112212122 is a wasteful number, since it uses less digits than its factorization.

11112212122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3462.

The product of its digits is 32, while the sum is 16.

Adding to 11112212122 its reverse (22121221111), we get a palindrome (33233433233).

It can be divided in two parts, 1111 and 2212122, that multiplied together give a palindrome (2457667542).

The spelling of 11112212122 in words is "eleven billion, one hundred twelve million, two hundred twelve thousand, one hundred twenty-two".