111011121201 has 64 divisors (see below), whose sum is σ = 168255595008. Its totient is φ = 64709111808.

The previous prime is 111011121197. The next prime is 111011121223. The reversal of 111011121201 is 102121110111.

It is not a de Polignac number, because 111011121201 - 2² = 111011121197 is a prime.

It is a super-2 number, since 2×111011121201² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (111011121601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 28338895 + ... + 28342811.

It is an arithmetic number, because the mean of its divisors is an integer number (2628993672).

Almost surely, 2^111011121201 is an apocalyptic number.

It is an amenable number.

111011121201 is a deficient number, since it is larger than the sum of its proper divisors (57244473807).

111011121201 is a wasteful number, since it uses less digits than its factorization.

111011121201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4650.

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 111011121201 its reverse (102121110111), we get a palindrome (213132231312).

The spelling of 111011121201 in words is "one hundred eleven billion, eleven million, one hundred twenty-one thousand, two hundred one".