111201001021100 has 72 divisors (see below), whose sum is σ = 248225965646400. Its totient is φ = 43213941030400.

The previous prime is 111201001021091. The next prime is 111201001021129. The reversal of 111201001021100 is 1120100102111.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 55761095 + ... + 57720894.

It is an arithmetic number, because the mean of its divisors is an integer number (3447582856200).

Almost surely, 2^{111201001021100} is an apocalyptic number.

111201001021100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111201001021100 is an abundant number, since it is smaller than the sum of its proper divisors (137024964625300).

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

111201001021100 is a wasteful number, since it uses less digits than its factorization.

111201001021100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113482283 (or 113482276 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 111201001021100 its reverse (1120100102111), we get a palindrome (112321101123211).

The spelling of 111201001021100 in words is "one hundred eleven trillion, two hundred one billion, one million, twenty-one thousand, one hundred".