1321021103012 has 48 divisors (see below), whose sum is σ = 2575806488640. Its totient is φ = 588599910528.

The previous prime is 1321021102991. The next prime is 1321021103111. The reversal of 1321021103012 is 2103011201231.

It is a super-2 number, since 2×1321021103012² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12195563 + ... + 12303405.

It is an arithmetic number, because the mean of its divisors is an integer number (53662635180).

Almost surely, 2^{1321021103012} is an apocalyptic number.

It is an amenable number.

1321021103012 is a deficient number, since it is larger than the sum of its proper divisors (1254785385628).

1321021103012 is a wasteful number, since it uses less digits than its factorization.

1321021103012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116012 (or 116010 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 1321021103012 its reverse (2103011201231), we get a palindrome (3424032304243).

The spelling of 1321021103012 in words is "one trillion, three hundred twenty-one billion, twenty-one million, one hundred three thousand, twelve".