211225233 has 8 divisors (see below), whose sum is σ = 282534688. Its totient is φ = 140366304.

The previous prime is 211225219. The next prime is 211225243. The reversal of 211225233 is 332522112.

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

It is not a de Polignac number, because 211225233 - 2²¹ = 209128081 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (211225243) 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, 111535 + ... + 113412.

It is an arithmetic number, because the mean of its divisors is an integer number (35316836).

Almost surely, 2^211225233 is an apocalyptic number.

It is an amenable number.

211225233 is a deficient number, since it is larger than the sum of its proper divisors (71309455).

211225233 is a wasteful number, since it uses less digits than its factorization.

211225233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225263.

The product of its digits is 720, while the sum is 21.

The square root of 211225233 is about 14533.5898180732. The cubic root of 211225233 is about 595.5459367968.

Adding to 211225233 its reverse (332522112), we get a palindrome (543747345).

The spelling of 211225233 in words is "two hundred eleven million, two hundred twenty-five thousand, two hundred thirty-three".