111133042020 has 288 divisors, whose sum is σ = 452615304960. Its totient is φ = 21316193280.

The previous prime is 111133041991. The next prime is 111133042067. The reversal of 111133042020 is 20240331111.

111133042020 is a `hidden beast` number, since 111 + 133 + 0 + 420 + 2 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 111133041984 and 111133042002.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 128215 + ... + 488574.

It is an arithmetic number, because the mean of its divisors is an integer number (1571580920).

Almost surely, 2^111133042020 is an apocalyptic number.

111133042020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 111133042020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (226307652480).

111133042020 is an abundant number, since it is smaller than the sum of its proper divisors (341482262940).

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

111133042020 is a wasteful number, since it uses less digits than its factorization.

111133042020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 616835 (or 616830 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 111133042020 its reverse (20240331111), we get a palindrome (131373373131).

The spelling of 111133042020 in words is "one hundred eleven billion, one hundred thirty-three million, forty-two thousand, twenty".