111220023210 has 16 divisors (see below), whose sum is σ = 266928055776. Its totient is φ = 29658672848.

The previous prime is 111220023199. The next prime is 111220023217. The reversal of 111220023210 is 12320022111.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 111220023210.

It is not an unprimeable number, because it can be changed into a prime (111220023217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1853667024 + ... + 1853667083.

It is an arithmetic number, because the mean of its divisors is an integer number (16683003486).

Almost surely, 2^111220023210 is an apocalyptic number.

111220023210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

111220023210 is an abundant number, since it is smaller than the sum of its proper divisors (155708032566).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

111220023210 is a wasteful number, since it uses less digits than its factorization.

111220023210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3707334117.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 111220023210 its reverse (12320022111), we get a palindrome (123540045321).

The spelling of 111220023210 in words is "one hundred eleven billion, two hundred twenty million, twenty-three thousand, two hundred ten".