111420122040020 has 24 divisors (see below), whose sum is σ = 234014668591200. Its totient is φ = 44561875043232.

The previous prime is 111420122039983. The next prime is 111420122040041. The reversal of 111420122040020 is 20040221024111.

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 = 111420122039974 and 111420122040001.

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, 385712810 + ... + 386001569.

It is an arithmetic number, because the mean of its divisors is an integer number (9750611191300).

Almost surely, 2^{111420122040020} is an apocalyptic number.

111420122040020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111420122040020 is an abundant number, since it is smaller than the sum of its proper divisors (122594546551180).

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

111420122040020 is a wasteful number, since it uses less digits than its factorization.

111420122040020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 771721607 (or 771721605 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 111420122040020 its reverse (20040221024111), we get a palindrome (131460343064131).

The spelling of 111420122040020 in words is "one hundred eleven trillion, four hundred twenty billion, one hundred twenty-two million, forty thousand, twenty".