221303020212331 has 4 divisors (see below), whose sum is σ = 221303076102664. Its totient is φ = 221302964322000.

The previous prime is 221303020212301. The next prime is 221303020212349. The reversal of 221303020212331 is 133212020303122.

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 221303020212331 - 2¹³ = 221303020204139 is a prime.

It is a super-2 number, since 2×221303020212331² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 221303020212296 and 221303020212305.

It is not an unprimeable number, because it can be changed into a prime (221303020212301) 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, 21512145 + ... + 30089506.

It is an arithmetic number, because the mean of its divisors is an integer number (55325769025666).

Almost surely, 2^{221303020212331} is an apocalyptic number.

221303020212331 is a deficient number, since it is larger than the sum of its proper divisors (55890333).

221303020212331 is an equidigital number, since it uses as much as digits as its factorization.

221303020212331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55890332.

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 221303020212331 its reverse (133212020303122), we get a palindrome (354515040515453).

The spelling of 221303020212331 in words is "two hundred twenty-one trillion, three hundred three billion, twenty million, two hundred twelve thousand, three hundred thirty-one".