111222201020 has 48 divisors (see below), whose sum is σ = 266960971200. Its totient is φ = 38129370624.

The previous prime is 111222200981. The next prime is 111222201029. The reversal of 111222201020 is 20102222111.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 111222200986 and 111222201004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111222201029) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1525232 + ... + 1596488.

It is an arithmetic number, because the mean of its divisors is an integer number (5561686900).

Almost surely, 2^111222201020 is an apocalyptic number.

111222201020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111222201020 is an abundant number, since it is smaller than the sum of its proper divisors (155738770180).

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

111222201020 is a wasteful number, since it uses less digits than its factorization.

111222201020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82422 (or 82420 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 111222201020 its reverse (20102222111), we get a palindrome (131324423131).

The spelling of 111222201020 in words is "one hundred eleven billion, two hundred twenty-two million, two hundred one thousand, twenty".