121000111010 has 32 divisors (see below), whose sum is σ = 222919361280. Its totient is φ = 47262999168.

The previous prime is 121000111003. The next prime is 121000111031. The reversal of 121000111010 is 10111000121.

It is a happy number.

It is a Curzon number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 1863959 + ... + 1927781.

It is an arithmetic number, because the mean of its divisors is an integer number (6966230040).

Almost surely, 2^121000111010 is an apocalyptic number.

121000111010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121000111010 is a deficient number, since it is larger than the sum of its proper divisors (101919250270).

121000111010 is a wasteful number, since it uses less digits than its factorization.

121000111010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68282.

The product of its (nonzero) digits is 2, while the sum is 8.

Adding to 121000111010 its reverse (10111000121), we get a palindrome (131111111131).

The spelling of 121000111010 in words is "one hundred twenty-one billion, one hundred eleven thousand, ten".