121331221320010 has 64 divisors (see below), whose sum is σ = 235377362626560. Its totient is φ = 44764670350080.

The previous prime is 121331221319989. The next prime is 121331221320031. The reversal of 121331221320010 is 10023122133121.

It is an interprime number because it is at equal distance from previous prime (121331221319989) and next prime (121331221320031).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 907347055 + ... + 907480765.

It is an arithmetic number, because the mean of its divisors is an integer number (3677771291040).

Almost surely, 2^{121331221320010} is an apocalyptic number.

121331221320010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121331221320010 is a deficient number, since it is larger than the sum of its proper divisors (114046141306550).

121331221320010 is a wasteful number, since it uses less digits than its factorization.

121331221320010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139063.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 121331221320010 its reverse (10023122133121), we get a palindrome (131354343453131).

The spelling of 121331221320010 in words is "one hundred twenty-one trillion, three hundred thirty-one billion, two hundred twenty-one million, three hundred twenty thousand, ten".