11221212112122 has 32 divisors (see below), whose sum is σ = 23166562074624. Its totient is φ = 3619716361200.

The previous prime is 11221212112079. The next prime is 11221212112127. The reversal of 11221212112122 is 22121121212211.

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

It is not an unprimeable number, because it can be changed into a prime (11221212112127) 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, 44567847 + ... + 44818917.

It is an arithmetic number, because the mean of its divisors is an integer number (723955064832).

Almost surely, 2^{11221212112122} is an apocalyptic number.

11221212112122 is an abundant number, since it is smaller than the sum of its proper divisors (11945349962502).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11221212112122 is a wasteful number, since it uses less digits than its factorization.

11221212112122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 491394.

The product of its digits is 128, while the sum is 21.

Adding to 11221212112122 its reverse (22121121212211), we get a palindrome (33342333324333).

The spelling of 11221212112122 in words is "eleven trillion, two hundred twenty-one billion, two hundred twelve million, one hundred twelve thousand, one hundred twenty-two".