111011122222220 has 24 divisors (see below), whose sum is σ = 254316389091408. Its totient is φ = 40367680808000.

The previous prime is 111011122222193. The next prime is 111011122222271. The reversal of 111011122222220 is 22222221110111.

It is a super-2 number, since 2×111011122222220² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 111011122222192 and 111011122222201.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 252298004831 + ... + 252298005270.

It is an arithmetic number, because the mean of its divisors is an integer number (10596516212142).

Almost surely, 2^{111011122222220} is an apocalyptic number.

111011122222220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111011122222220 is an abundant number, since it is smaller than the sum of its proper divisors (143305266869188).

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

111011122222220 is a wasteful number, since it uses less digits than its factorization.

111011122222220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 504596010121 (or 504596010119 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 111011122222220 its reverse (22222221110111), we get a palindrome (133233343332331).

The spelling of 111011122222220 in words is "one hundred eleven trillion, eleven billion, one hundred twenty-two million, two hundred twenty-two thousand, two hundred twenty".