211222533 has 4 divisors (see below), whose sum is σ = 281630048. Its totient is φ = 140815020.

The previous prime is 211222523. The next prime is 211222553. The reversal of 211222533 is 335222112.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 211222533 - 2⁶ = 211222469 is a prime.

It is a super-2 number, since 2×211222533² = 89229916893872178, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211222513) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35203753 + ... + 35203758.

It is an arithmetic number, because the mean of its divisors is an integer number (70407512).

Almost surely, 2^211222533 is an apocalyptic number.

It is an amenable number.

211222533 is a deficient number, since it is larger than the sum of its proper divisors (70407515).

211222533 is an equidigital number, since it uses as much as digits as its factorization.

211222533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70407514.

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

The square root of 211222533 is about 14533.4969295074. The cubic root of 211222533 is about 595.5433992513.

Adding to 211222533 its reverse (335222112), we get a palindrome (546444645).

The spelling of 211222533 in words is "two hundred eleven million, two hundred twenty-two thousand, five hundred thirty-three".