1303222112021 has 4 divisors (see below), whose sum is σ = 1330950242112. Its totient is φ = 1275493981932.

The previous prime is 1303222111973. The next prime is 1303222112041. The reversal of 1303222112021 is 1202112223031.

1303222112021 = 67840² + 67841² + ... + 68121².

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 1303222112021 - 2¹⁰ = 1303222110997 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1303222111984 and 1303222112002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1303222112041) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 13864064975 + ... + 13864065068.

It is an arithmetic number, because the mean of its divisors is an integer number (332737560528).

Almost surely, 2^{1303222112021} is an apocalyptic number.

It is an amenable number.

1303222112021 is a deficient number, since it is larger than the sum of its proper divisors (27728130091).

1303222112021 is an equidigital number, since it uses as much as digits as its factorization.

1303222112021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27728130090.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 1303222112021 its reverse (1202112223031), we get a palindrome (2505334335052).

The spelling of 1303222112021 in words is "one trillion, three hundred three billion, two hundred twenty-two million, one hundred twelve thousand, twenty-one".