1321212103302 has 64 divisors (see below), whose sum is σ = 3252440056320. Its totient is φ = 348427367424.

The previous prime is 1321212103249. The next prime is 1321212103307. The reversal of 1321212103302 is 2033012121231.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1321212103307) 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 31 ways as a sum of consecutive naturals, for example, 8617974 + ... + 8769942.

It is an arithmetic number, because the mean of its divisors is an integer number (50819375880).

Almost surely, 2^{1321212103302} is an apocalyptic number.

1321212103302 is an abundant number, since it is smaller than the sum of its proper divisors (1931227953018).

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

1321212103302 is a wasteful number, since it uses less digits than its factorization.

1321212103302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167917.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 1321212103302 its reverse (2033012121231), we get a palindrome (3354224224533).

The spelling of 1321212103302 in words is "one trillion, three hundred twenty-one billion, two hundred twelve million, one hundred three thousand, three hundred two".