111012022020 has 24 divisors (see below), whose sum is σ = 310833661824. Its totient is φ = 29603205856.

The previous prime is 111012021971. The next prime is 111012022021. The reversal of 111012022020 is 20220210111.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 111012021987 and 111012022005.

It is not an unprimeable number, because it can be changed into a prime (111012022021) 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, 925100124 + ... + 925100243.

It is an arithmetic number, because the mean of its divisors is an integer number (12951402576).

Almost surely, 2^111012022020 is an apocalyptic number.

111012022020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111012022020 is an abundant number, since it is smaller than the sum of its proper divisors (199821639804).

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

111012022020 is a wasteful number, since it uses less digits than its factorization.

111012022020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1850200379 (or 1850200377 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 111012022020 its reverse (20220210111), we get a palindrome (131232232131).

The spelling of 111012022020 in words is "one hundred eleven billion, twelve million, twenty-two thousand, twenty".