121321442210 has 32 divisors (see below), whose sum is σ = 225467366400. Its totient is φ = 46953910080.

The previous prime is 121321442171. The next prime is 121321442219. The reversal of 121321442210 is 12244123121.

It is not an unprimeable number, because it can be changed into a prime (121321442219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1662776 + ... + 1734204.

It is an arithmetic number, because the mean of its divisors is an integer number (7045855200).

Almost surely, 2^121321442210 is an apocalyptic number.

121321442210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121321442210 is a deficient number, since it is larger than the sum of its proper divisors (104145924190).

121321442210 is a wasteful number, since it uses less digits than its factorization.

121321442210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76946.

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 121321442210 its reverse (12244123121), we get a palindrome (133565565331).

The spelling of 121321442210 in words is "one hundred twenty-one billion, three hundred twenty-one million, four hundred forty-two thousand, two hundred ten".