221210211023 has 2 divisors, whose sum is σ = 221210211024. Its totient is φ = 221210211022.

The previous prime is 221210211007. The next prime is 221210211043. The reversal of 221210211023 is 320112012122.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 221210211023 - 2⁴ = 221210211007 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 221210210992 and 221210211010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221210211043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110605105511 + 110605105512.

It is an arithmetic number, because the mean of its divisors is an integer number (110605105512).

Almost surely, 2^221210211023 is an apocalyptic number.

221210211023 is a deficient number, since it is larger than the sum of its proper divisors (1).

221210211023 is an equidigital number, since it uses as much as digits as its factorization.

221210211023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 221210211023 its reverse (320112012122), we get a palindrome (541322223145).

The spelling of 221210211023 in words is "two hundred twenty-one billion, two hundred ten million, two hundred eleven thousand, twenty-three".