223222030021 has 2 divisors, whose sum is σ = 223222030022. Its totient is φ = 223222030020.

The previous prime is 223222029941. The next prime is 223222030039. The reversal of 223222030021 is 120030222322.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 211955268996 + 11266761025 = 460386^2 + 106145^2 .

It is a cyclic number.

It is not a de Polignac number, because 223222030021 - 2²¹ = 223219932869 is a prime.

It is a super-3 number, since 3×223222030021³ (a number of 35 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (223222030921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111611015010 + 111611015011.

It is an arithmetic number, because the mean of its divisors is an integer number (111611015011).

Almost surely, 2^223222030021 is an apocalyptic number.

It is an amenable number.

223222030021 is a deficient number, since it is larger than the sum of its proper divisors (1).

223222030021 is an equidigital number, since it uses as much as digits as its factorization.

223222030021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 19.

Adding to 223222030021 its reverse (120030222322), we get a palindrome (343252252343).

The spelling of 223222030021 in words is "two hundred twenty-three billion, two hundred twenty-two million, thirty thousand, twenty-one".