221020000303331 has 4 divisors (see below), whose sum is σ = 221020047179064. Its totient is φ = 221019953427600.

The previous prime is 221020000303273. The next prime is 221020000303343. The reversal of 221020000303331 is 133303000020122.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 221020000303331 - 2³⁰ = 221018926561507 is a prime.

It is a super-2 number, since 2×221020000303331² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221020000303391) 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, 15460205 + ... + 26097086.

It is an arithmetic number, because the mean of its divisors is an integer number (55255011794766).

Almost surely, 2^{221020000303331} is an apocalyptic number.

221020000303331 is a deficient number, since it is larger than the sum of its proper divisors (46875733).

221020000303331 is an equidigital number, since it uses as much as digits as its factorization.

221020000303331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46875732.

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 221020000303331 its reverse (133303000020122), we get a palindrome (354323000323453).

The spelling of 221020000303331 in words is "two hundred twenty-one trillion, twenty billion, three hundred three thousand, three hundred thirty-one".