111211122202220 has 24 divisors (see below), whose sum is σ = 233553142006800. Its totient is φ = 44482584998592.

The previous prime is 111211122202097. The next prime is 111211122202283. The reversal of 111211122202220 is 22202221112111.

It is a super-2 number, since 2×111211122202220² (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 = 111211122202192 and 111211122202201.

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, 116003330 + ... + 116958089.

It is an arithmetic number, because the mean of its divisors is an integer number (9731380916950).

Almost surely, 2^{111211122202220} is an apocalyptic number.

111211122202220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111211122202220 is an abundant number, since it is smaller than the sum of its proper divisors (122342019804580).

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

111211122202220 is a wasteful number, since it uses less digits than its factorization.

111211122202220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232985297 (or 232985295 counting only the distinct ones).

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

Adding to 111211122202220 its reverse (22202221112111), we get a palindrome (133413343314331).

The spelling of 111211122202220 in words is "one hundred eleven trillion, two hundred eleven billion, one hundred twenty-two million, two hundred two thousand, two hundred twenty".