111102120213 has 64 divisors (see below), whose sum is σ = 173408901120. Its totient is φ = 61963833600.

The previous prime is 111102120187. The next prime is 111102120343. The reversal of 111102120213 is 312021201111.

It is not a de Polignac number, because 111102120213 - 2⁹ = 111102119701 is a prime.

It is a super-2 number, since 2×111102120213² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 111102120192 and 111102120201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111102120013) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 136993578 + ... + 136994388.

It is an arithmetic number, because the mean of its divisors is an integer number (2709514080).

Almost surely, 2^111102120213 is an apocalyptic number.

It is an amenable number.

111102120213 is a deficient number, since it is larger than the sum of its proper divisors (62306780907).

111102120213 is a wasteful number, since it uses less digits than its factorization.

111102120213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1578.

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 111102120213 its reverse (312021201111), we get a palindrome (423123321324).

The spelling of 111102120213 in words is "one hundred eleven billion, one hundred two million, one hundred twenty thousand, two hundred thirteen".