111212022222220 has 48 divisors (see below), whose sum is σ = 233709776092800. Its totient is φ = 44453471938560.

The previous prime is 111212022222113. The next prime is 111212022222233. The reversal of 111212022222220 is 22222220212111.

It is a super-2 number, since 2×111212022222220² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 111212022222191 and 111212022222200.

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, 1656657616 + ... + 1656724744.

It is an arithmetic number, because the mean of its divisors is an integer number (4868953668600).

Almost surely, 2^{111212022222220} is an apocalyptic number.

111212022222220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111212022222220 is an abundant number, since it is smaller than the sum of its proper divisors (122497753870580).

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

111212022222220 is a wasteful number, since it uses less digits than its factorization.

111212022222220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124258 (or 124256 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 22.

Adding to 111212022222220 its reverse (22222220212111), we get a palindrome (133434242434331).

The spelling of 111212022222220 in words is "one hundred eleven trillion, two hundred twelve billion, twenty-two million, two hundred twenty-two thousand, two hundred twenty".