111101212132220 has 24 divisors (see below), whose sum is σ = 233338159269600. Its totient is φ = 44435606035392.

The previous prime is 111101212132217. The next prime is 111101212132241. The reversal of 111101212132220 is 22231212101111.

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 = 111101212132192 and 111101212132201.

It is a congruent number.

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, 304739360 + ... + 305103719.

It is an arithmetic number, because the mean of its divisors is an integer number (9722423302900).

Almost surely, 2^{111101212132220} is an apocalyptic number.

111101212132220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111101212132220 is an abundant number, since it is smaller than the sum of its proper divisors (122236947137380).

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

111101212132220 is a wasteful number, since it uses less digits than its factorization.

111101212132220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 609852197 (or 609852195 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 20.

Adding to 111101212132220 its reverse (22231212101111), we get a palindrome (133332424233331).

The spelling of 111101212132220 in words is "one hundred eleven trillion, one hundred one billion, two hundred twelve million, one hundred thirty-two thousand, two hundred twenty".