111141440221020 has 96 divisors (see below), whose sum is σ = 339834061598976. Its totient is φ = 26915801625600.

The previous prime is 111141440221003. The next prime is 111141440221039. The reversal of 111141440221020 is 20122044141111.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 85535386 + ... + 86825025.

It is an arithmetic number, because the mean of its divisors is an integer number (3539938141656).

Almost surely, 2^{111141440221020} is an apocalyptic number.

111141440221020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111141440221020 is an abundant number, since it is smaller than the sum of its proper divisors (228692621377956).

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

111141440221020 is a wasteful number, since it uses less digits than its factorization.

111141440221020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172361411 (or 172361409 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 24.

Adding to 111141440221020 its reverse (20122044141111), we get a palindrome (131263484362131).

The spelling of 111141440221020 in words is "one hundred eleven trillion, one hundred forty-one billion, four hundred forty million, two hundred twenty-one thousand, twenty".