21122010222223 has 2 divisors, whose sum is σ = 21122010222224. Its totient is φ = 21122010222222.

The previous prime is 21122010222133. The next prime is 21122010222283. The reversal of 21122010222223 is 32222201022112.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21122010222223 - 2¹⁷ = 21122010091151 is a prime.

It is a super-2 number, since 2×21122010222223² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21122010222194 and 21122010222203.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21122010222283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10561005111111 + 10561005111112.

It is an arithmetic number, because the mean of its divisors is an integer number (10561005111112).

Almost surely, 2^{21122010222223} is an apocalyptic number.

21122010222223 is a deficient number, since it is larger than the sum of its proper divisors (1).

21122010222223 is an equidigital number, since it uses as much as digits as its factorization.

21122010222223 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 21122010222223 its reverse (32222201022112), we get a palindrome (53344211244335).

The spelling of 21122010222223 in words is "twenty-one trillion, one hundred twenty-two billion, ten million, two hundred twenty-two thousand, two hundred twenty-three".