111121001142 has 8 divisors (see below), whose sum is σ = 222242002296. Its totient is φ = 37040333712.

The previous prime is 111121001099. The next prime is 111121001197. The reversal of 111121001142 is 241100121111.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

111121001142 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9260083423 + ... + 9260083434.

It is an arithmetic number, because the mean of its divisors is an integer number (27780250287).

Almost surely, 2^111121001142 is an apocalyptic number.

111121001142 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

111121001142 is a wasteful number, since it uses less digits than its factorization.

111121001142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18520166862.

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

Adding to 111121001142 its reverse (241100121111), we get a palindrome (352221122253).

The spelling of 111121001142 in words is "one hundred eleven billion, one hundred twenty-one million, one thousand, one hundred forty-two".