121111000210 has 16 divisors (see below), whose sum is σ = 218133818496. Its totient is φ = 48414618288.

The previous prime is 121111000201. The next prime is 121111000217. The reversal of 121111000210 is 12000111121.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is not an unprimeable number, because it can be changed into a prime (121111000217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3705642 + ... + 3738181.

It is an arithmetic number, because the mean of its divisors is an integer number (13633363656).

Almost surely, 2^121111000210 is an apocalyptic number.

121111000210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121111000210 is a deficient number, since it is larger than the sum of its proper divisors (97022818286).

121111000210 is a wasteful number, since it uses less digits than its factorization.

121111000210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7445457.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 121111000210 its reverse (12000111121), we get a palindrome (133111111331).

The spelling of 121111000210 in words is "one hundred twenty-one billion, one hundred eleven million, two hundred ten", and thus it is an aban number.