111222012057 has 16 divisors (see below), whose sum is σ = 161349834240. Its totient is φ = 67738701312.

The previous prime is 111222012043. The next prime is 111222012059. The reversal of 111222012057 is 750210222111.

It is a happy number.

It is not a de Polignac number, because 111222012057 - 2¹⁸ = 111221749913 is a prime.

It is not an unprimeable number, because it can be changed into a prime (111222012059) 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 15 ways as a sum of consecutive naturals, for example, 14696457 + ... + 14704022.

It is an arithmetic number, because the mean of its divisors is an integer number (10084364640).

Almost surely, 2^111222012057 is an apocalyptic number.

It is an amenable number.

111222012057 is a deficient number, since it is larger than the sum of its proper divisors (50127822183).

111222012057 is a wasteful number, since it uses less digits than its factorization.

111222012057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29400592.

The product of its (nonzero) digits is 560, while the sum is 24.

Adding to 111222012057 its reverse (750210222111), we get a palindrome (861432234168).

The spelling of 111222012057 in words is "one hundred eleven billion, two hundred twenty-two million, twelve thousand, fifty-seven".