111222212020220 has 48 divisors (see below), whose sum is σ = 266936940096960. Its totient is φ = 38132811085824.

The previous prime is 111222212020177. The next prime is 111222212020267. The reversal of 111222212020220 is 22020212222111.

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 = 111222212020192 and 111222212020201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4995746 + ... + 15729014.

It is an arithmetic number, because the mean of its divisors is an integer number (5561186252020).

Almost surely, 2^{111222212020220} is an apocalyptic number.

111222212020220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111222212020220 is an abundant number, since it is smaller than the sum of its proper divisors (155714728076740).

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

111222212020220 is a wasteful number, since it uses less digits than its factorization.

111222212020220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10807302 (or 10807300 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 111222212020220 its reverse (22020212222111), we get a palindrome (133242424242331).

The spelling of 111222212020220 in words is "one hundred eleven trillion, two hundred twenty-two billion, two hundred twelve million, twenty thousand, two hundred twenty".