211221221201223 has 8 divisors (see below), whose sum is σ = 298194665225328. Its totient is φ = 132530962322304.

The previous prime is 211221221201197. The next prime is 211221221201227. The reversal of 211221221201223 is 322102122122112.

211221221201223 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 211221221201223 - 2⁵ = 211221221201191 is a prime.

It is a super-2 number, since 2×211221221201223² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 211221221201193 and 211221221201202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211221221201227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2070796286236 + ... + 2070796286337.

It is an arithmetic number, because the mean of its divisors is an integer number (37274333153166).

Almost surely, 2^{211221221201223} is an apocalyptic number.

211221221201223 is a deficient number, since it is larger than the sum of its proper divisors (86973444024105).

211221221201223 is a wasteful number, since it uses less digits than its factorization.

211221221201223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4141592572593.

The product of its (nonzero) digits is 768, while the sum is 24.

Adding to 211221221201223 its reverse (322102122122112), we get a palindrome (533323343323335).

The spelling of 211221221201223 in words is "two hundred eleven trillion, two hundred twenty-one billion, two hundred twenty-one million, two hundred one thousand, two hundred twenty-three".