221302022020231 has 4 divisors (see below), whose sum is σ = 221302746901152. Its totient is φ = 221301297139312.

The previous prime is 221302022020207. The next prime is 221302022020319. The reversal of 221302022020231 is 132020220203122.

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 221302022020231 - 2⁵ = 221302022020199 is a prime.

It is a super-2 number, since 2×221302022020231² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221302022020531) 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, 361982326 + ... + 362593171.

It is an arithmetic number, because the mean of its divisors is an integer number (55325686725288).

Almost surely, 2^{221302022020231} is an apocalyptic number.

221302022020231 is a deficient number, since it is larger than the sum of its proper divisors (724880921).

221302022020231 is an equidigital number, since it uses as much as digits as its factorization.

221302022020231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 724880920.

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 221302022020231 its reverse (132020220203122), we get a palindrome (353322242223353).

The spelling of 221302022020231 in words is "two hundred twenty-one trillion, three hundred two billion, twenty-two million, twenty thousand, two hundred thirty-one".