1321200220102 has 96 divisors (see below), whose sum is σ = 2502187459200. Its totient is φ = 519599888640.

The previous prime is 1321200220073. The next prime is 1321200220121. The reversal of 1321200220102 is 2010220021231.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 40889149 + ... + 40921447.

It is an arithmetic number, because the mean of its divisors is an integer number (26064452700).

Almost surely, 2^{1321200220102} is an apocalyptic number.

1321200220102 is a deficient number, since it is larger than the sum of its proper divisors (1180987239098).

1321200220102 is a wasteful number, since it uses less digits than its factorization.

1321200220102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32946 (or 32939 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 1321200220102 its reverse (2010220021231), we get a palindrome (3331420241333).

The spelling of 1321200220102 in words is "one trillion, three hundred twenty-one billion, two hundred million, two hundred twenty thousand, one hundred two".