112211212220 has 48 divisors (see below), whose sum is σ = 236855162880. Its totient is φ = 44654062656.

The previous prime is 112211212121. The next prime is 112211212283. The reversal of 112211212220 is 22212112211.

It is a super-2 number, since 2×112211212220² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5261699 + ... + 5282981.

It is an arithmetic number, because the mean of its divisors is an integer number (4934482560).

Almost surely, 2^112211212220 is an apocalyptic number.

112211212220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

112211212220 is an abundant number, since it is smaller than the sum of its proper divisors (124643950660).

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

112211212220 is a wasteful number, since it uses less digits than its factorization.

112211212220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22634 (or 22632 counting only the distinct ones).

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

Adding to 112211212220 its reverse (22212112211), we get a palindrome (134423324431).

The spelling of 112211212220 in words is "one hundred twelve billion, two hundred eleven million, two hundred twelve thousand, two hundred twenty".