111220111021210 has 16 divisors (see below), whose sum is σ = 200903606909856. Its totient is φ = 44330842837008.

The previous prime is 111220111021171. The next prime is 111220111021213. The reversal of 111220111021210 is 12120111022111.

It is not an unprimeable number, because it can be changed into a prime (111220111021213) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19650193464 + ... + 19650199123.

It is an arithmetic number, because the mean of its divisors is an integer number (12556475431866).

Almost surely, 2^{111220111021210} is an apocalyptic number.

111220111021210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

111220111021210 is a deficient number, since it is larger than the sum of its proper divisors (89683495888646).

111220111021210 is a wasteful number, since it uses less digits than its factorization.

111220111021210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39300392877.

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

Adding to 111220111021210 its reverse (12120111022111), we get a palindrome (123340222043321).

Subtracting from 111220111021210 its reverse (12120111022111), we obtain a palindrome (99099999999099).

The spelling of 111220111021210 in words is "one hundred eleven trillion, two hundred twenty billion, one hundred eleven million, twenty-one thousand, two hundred ten".