111527204121 has 6 divisors (see below), whose sum is σ = 161094850410. Its totient is φ = 74351469408.

The previous prime is 111527204077. The next prime is 111527204147. The reversal of 111527204121 is 121402725111.

111527204121 is a `hidden beast` number, since 1 + 11 + 527 + 2 + 0 + 4 + 121 = 666.

It can be written as a sum of positive squares in only one way, i.e., 87874302096 + 23652902025 = 296436^2 + 153795^2 .

It is not a de Polignac number, because 111527204121 - 2¹⁰ = 111527203097 is a prime.

It is not an unprimeable number, because it can be changed into a prime (111527204221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6195955776 + ... + 6195955793.

It is an arithmetic number, because the mean of its divisors is an integer number (26849141735).

Almost surely, 2^111527204121 is an apocalyptic number.

It is an amenable number.

111527204121 is a deficient number, since it is larger than the sum of its proper divisors (49567646289).

111527204121 is a wasteful number, since it uses less digits than its factorization.

111527204121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12391911575 (or 12391911572 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 27.

Adding to 111527204121 its reverse (121402725111), we get a palindrome (232929929232).

The spelling of 111527204121 in words is "one hundred eleven billion, five hundred twenty-seven million, two hundred four thousand, one hundred twenty-one".