1002012111321 has 16 divisors (see below), whose sum is σ = 1451519252736. Its totient is φ = 611165995776.

The previous prime is 1002012111319. The next prime is 1002012111337. The reversal of 1002012111321 is 1231112102001.

It is not a de Polignac number, because 1002012111321 - 2¹ = 1002012111319 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1002012111321.

It is not an unprimeable number, because it can be changed into a prime (1002012191321) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 113679745 + ... + 113688558.

It is an arithmetic number, because the mean of its divisors is an integer number (90719953296).

Almost surely, 2^{1002012111321} is an apocalyptic number.

It is an amenable number.

1002012111321 is a deficient number, since it is larger than the sum of its proper divisors (449507141415).

1002012111321 is a wasteful number, since it uses less digits than its factorization.

1002012111321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227368432.

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 1002012111321 its reverse (1231112102001), we get a palindrome (2233124213322).

The spelling of 1002012111321 in words is "one trillion, two billion, twelve million, one hundred eleven thousand, three hundred twenty-one".