211222023 has 16 divisors (see below), whose sum is σ = 283756416. Its totient is φ = 139756320.

The previous prime is 211222019. The next prime is 211222057. The reversal of 211222023 is 320222112.

It is a happy number.

It is not a de Polignac number, because 211222023 - 2² = 211222019 is a prime.

It is a super-2 number, since 2×211222023² = 89229486000425058, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 211221993 and 211222011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211222223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 344265 + ... + 344877.

It is an arithmetic number, because the mean of its divisors is an integer number (17734776).

Almost surely, 2^211222023 is an apocalyptic number.

211222023 is a deficient number, since it is larger than the sum of its proper divisors (72534393).

211222023 is a wasteful number, since it uses less digits than its factorization.

211222023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1294.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 211222023 is about 14533.4793838227. The cubic root of 211222023 is about 595.5429199347.

Adding to 211222023 its reverse (320222112), we get a palindrome (531444135).

The spelling of 211222023 in words is "two hundred eleven million, two hundred twenty-two thousand, twenty-three".