111100021221010 has 8 divisors (see below), whose sum is σ = 199980038197836. Its totient is φ = 44440008488400.

The previous prime is 111100021220999. The next prime is 111100021221011. The reversal of 111100021221010 is 10122120001111.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 107086133187049 + 4013888033961 = 10348243^2 + 2003469^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (111100021221011) 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 3 ways as a sum of consecutive naturals, for example, 5555001061041 + ... + 5555001061060.

Almost surely, 2^{111100021221010} is an apocalyptic number.

111100021221010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

111100021221010 is a deficient number, since it is larger than the sum of its proper divisors (88880016976826).

111100021221010 is a wasteful number, since it uses less digits than its factorization.

111100021221010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11110002122108.

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

Adding to 111100021221010 its reverse (10122120001111), we get a palindrome (121222141222121).

The spelling of 111100021221010 in words is "one hundred eleven trillion, one hundred billion, twenty-one million, two hundred twenty-one thousand, ten".