111133221220 has 48 divisors (see below), whose sum is σ = 275323603968. Its totient is φ = 36873694080.

The previous prime is 111133221217. The next prime is 111133221263. The reversal of 111133221220 is 22122331111.

It is a super-3 number, since 3×111133221220³ (a number of 34 digits) contains 333 as substring.

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, 12799027 + ... + 12807706.

It is an arithmetic number, because the mean of its divisors is an integer number (5735908416).

Almost surely, 2^111133221220 is an apocalyptic number.

111133221220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111133221220 is an abundant number, since it is smaller than the sum of its proper divisors (164190382748).

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

111133221220 is a wasteful number, since it uses less digits than its factorization.

111133221220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25606780 (or 25606778 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 111133221220 its reverse (22122331111), we get a palindrome (133255552331).

The spelling of 111133221220 in words is "one hundred eleven billion, one hundred thirty-three million, two hundred twenty-one thousand, two hundred twenty".