111022211021020 has 24 divisors (see below), whose sum is σ = 251081000309664. Its totient is φ = 40992816376896.

The previous prime is 111022211021003. The next prime is 111022211021021. The reversal of 111022211021020 is 20120112220111.

It is a junction number, because it is equal to n+sod(n) for n = 111022211020985 and 111022211021003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111022211021021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 213504251704 + ... + 213504252223.

It is an arithmetic number, because the mean of its divisors is an integer number (10461708346236).

Almost surely, 2^{111022211021020} is an apocalyptic number.

111022211021020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111022211021020 is an abundant number, since it is smaller than the sum of its proper divisors (140058789288644).

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

111022211021020 is a wasteful number, since it uses less digits than its factorization.

111022211021020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 427008503949 (or 427008503947 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 111022211021020 its reverse (20120112220111), we get a palindrome (131142323241131).

The spelling of 111022211021020 in words is "one hundred eleven trillion, twenty-two billion, two hundred eleven million, twenty-one thousand, twenty".