221220201001223 has 2 divisors, whose sum is σ = 221220201001224. Its totient is φ = 221220201001222.

The previous prime is 221220201001081. The next prime is 221220201001313. The reversal of 221220201001223 is 322100102022122.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 221220201001223 - 2¹⁶ = 221220200935687 is a prime.

It is a super-2 number, since 2×221220201001223² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 221220201001195 and 221220201001204.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221220201001523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110610100500611 + 110610100500612.

It is an arithmetic number, because the mean of its divisors is an integer number (110610100500612).

Almost surely, 2^{221220201001223} is an apocalyptic number.

221220201001223 is a deficient number, since it is larger than the sum of its proper divisors (1).

221220201001223 is an equidigital number, since it uses as much as digits as its factorization.

221220201001223 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 221220201001223 its reverse (322100102022122), we get a palindrome (543320303023345).

The spelling of 221220201001223 in words is "two hundred twenty-one trillion, two hundred twenty billion, two hundred one million, one thousand, two hundred twenty-three".