111521401142 has 8 divisors (see below), whose sum is σ = 168148848936. Its totient is φ = 55471784832.

The previous prime is 111521401127. The next prime is 111521401169. The reversal of 111521401142 is 241104125111.

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

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, 144457388 + ... + 144458159.

It is an arithmetic number, because the mean of its divisors is an integer number (21018606117).

Almost surely, 2^111521401142 is an apocalyptic number.

111521401142 is a deficient number, since it is larger than the sum of its proper divisors (56627447794).

111521401142 is a wasteful number, since it uses less digits than its factorization.

111521401142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 288915742.

The product of its (nonzero) digits is 320, while the sum is 23.

Adding to 111521401142 its reverse (241104125111), we get a palindrome (352625526253).

The spelling of 111521401142 in words is "one hundred eleven billion, five hundred twenty-one million, four hundred one thousand, one hundred forty-two".