1321213321110 has 32 divisors (see below), whose sum is σ = 3170969635680. Its totient is φ = 352317145088.

The previous prime is 1321213321093. The next prime is 1321213321133. The reversal of 1321213321110 is 111233121231.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1411036 + ... + 2152544.

It is an arithmetic number, because the mean of its divisors is an integer number (99092801115).

Almost surely, 2^{1321213321110} is an apocalyptic number.

1321213321110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1321213321110 is an abundant number, since it is smaller than the sum of its proper divisors (1849756314570).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1321213321110 is a wasteful number, since it uses less digits than its factorization.

1321213321110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 800912.

The product of its (nonzero) digits is 216, while the sum is 21.

Adding to 1321213321110 its reverse (111233121231), we get a palindrome (1432446442341).

The spelling of 1321213321110 in words is "one trillion, three hundred twenty-one billion, two hundred thirteen million, three hundred twenty-one thousand, one hundred ten".