111213203101 has 48 divisors (see below), whose sum is σ = 158371292800. Its totient is φ = 75783185280.

The previous prime is 111213203053. The next prime is 111213203141. The reversal of 111213203101 is 101302312111.

It is a happy number.

It is not a de Polignac number, because 111213203101 - 2¹⁵ = 111213170333 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111213203141) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 56586 + ... + 475003.

Almost surely, 2^111213203101 is an apocalyptic number.

111213203101 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

111213203101 is a deficient number, since it is larger than the sum of its proper divisors (47158089699).

111213203101 is a wasteful number, since it uses less digits than its factorization.

111213203101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 531650 (or 531639 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 111213203101 its reverse (101302312111), we get a palindrome (212515515212).

The spelling of 111213203101 in words is "one hundred eleven billion, two hundred thirteen million, two hundred three thousand, one hundred one".