111220101210010 has 32 divisors (see below), whose sum is σ = 215601296963472. Its totient is φ = 41064853340160.

The previous prime is 111220101209953. The next prime is 111220101210041. The reversal of 111220101210010 is 10012101022111.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 81662687901081 + 29557413308929 = 9036741^2 + 5436673^2 .

It is a super-2 number, since 2×111220101210010² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5519301 + ... + 15902920.

Almost surely, 2^{111220101210010} is an apocalyptic number.

111220101210010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

111220101210010 is a deficient number, since it is larger than the sum of its proper divisors (104381195753462).

111220101210010 is a wasteful number, since it uses less digits than its factorization.

111220101210010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21462178.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 111220101210010 its reverse (10012101022111), we get a palindrome (121232202232121).

The spelling of 111220101210010 in words is "one hundred eleven trillion, two hundred twenty billion, one hundred one million, two hundred ten thousand, ten".