1021221113003 has 16 divisors (see below), whose sum is σ = 1256958736320. Its totient is φ = 807953342976.

The previous prime is 1021221112997. The next prime is 1021221113039. The reversal of 1021221113003 is 3003111221201.

It is not a de Polignac number, because 1021221113003 - 2⁶ = 1021221112939 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1021221113053) 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, 1344551 + ... + 1962207.

It is an arithmetic number, because the mean of its divisors is an integer number (78559921020).

Almost surely, 2^{1021221113003} is an apocalyptic number.

1021221113003 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1021221113003 is a deficient number, since it is larger than the sum of its proper divisors (235737623317).

1021221113003 is a wasteful number, since it uses less digits than its factorization.

1021221113003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 635846.

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

Adding to 1021221113003 its reverse (3003111221201), we get a palindrome (4024332334204).

The spelling of 1021221113003 in words is "one trillion, twenty-one billion, two hundred twenty-one million, one hundred thirteen thousand, three".