111101401212 has 96 divisors (see below), whose sum is σ = 263036289600. Its totient is φ = 36496373760.

The previous prime is 111101401189. The next prime is 111101401259. The reversal of 111101401212 is 212104101111.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 111101401191 and 111101401200.

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, 199463638 + ... + 199464194.

It is an arithmetic number, because the mean of its divisors is an integer number (2739961350).

Almost surely, 2^111101401212 is an apocalyptic number.

111101401212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

111101401212 is an abundant number, since it is smaller than the sum of its proper divisors (151934888388).

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

111101401212 is a wasteful number, since it uses less digits than its factorization.

111101401212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1391 (or 1389 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 111101401212 its reverse (212104101111), we get a palindrome (323205502323).

The spelling of 111101401212 in words is "one hundred eleven billion, one hundred one million, four hundred one thousand, two hundred twelve".