1003112021221 has 4 divisors (see below), whose sum is σ = 1012486900032. Its totient is φ = 993737142412.

The previous prime is 1003112021141. The next prime is 1003112021237. The reversal of 1003112021221 is 1221202113001.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1003112021221 - 2²³ = 1003103632613 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1003112021195 and 1003112021204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1003112021321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4687439245 + ... + 4687439458.

It is an arithmetic number, because the mean of its divisors is an integer number (253121725008).

Almost surely, 2^{1003112021221} is an apocalyptic number.

It is an amenable number.

1003112021221 is a deficient number, since it is larger than the sum of its proper divisors (9374878811).

1003112021221 is an equidigital number, since it uses as much as digits as its factorization.

1003112021221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9374878810.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 1003112021221 its reverse (1221202113001), we get a palindrome (2224314134222).

The spelling of 1003112021221 in words is "one trillion, three billion, one hundred twelve million, twenty-one thousand, two hundred twenty-one".