111121101212 has 48 divisors (see below), whose sum is σ = 219036109824. Its totient is φ = 48868512000.

The previous prime is 111121101199. The next prime is 111121101253. The reversal of 111121101212 is 212101121111.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8192228 + ... + 8205780.

It is an arithmetic number, because the mean of its divisors is an integer number (4563252288).

Almost surely, 2^111121101212 is an apocalyptic number.

It is an amenable number.

111121101212 is a deficient number, since it is larger than the sum of its proper divisors (107915008612).

111121101212 is a wasteful number, since it uses less digits than its factorization.

111121101212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19610 (or 19608 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 111121101212 its reverse (212101121111), we get a palindrome (323222222323).

The spelling of 111121101212 in words is "one hundred eleven billion, one hundred twenty-one million, one hundred one thousand, two hundred twelve".