211222463 has 4 divisors (see below), whose sum is σ = 212885760. Its totient is φ = 209559168.

The previous prime is 211222397. The next prime is 211222469. The reversal of 211222463 is 364222112.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 211222463 - 2¹² = 211218367 is a prime.

It is a super-2 number, since 2×211222463² = 89229857751572738, 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 (211222469) 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, 831458 + ... + 831711.

It is an arithmetic number, because the mean of its divisors is an integer number (53221440).

Almost surely, 2^211222463 is an apocalyptic number.

211222463 is a deficient number, since it is larger than the sum of its proper divisors (1663297).

211222463 is a wasteful number, since it uses less digits than its factorization.

211222463 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1663296.

The product of its digits is 1152, while the sum is 23.

The square root of 211222463 is about 14533.4945212774. The cubic root of 211222463 is about 595.5433334628.

Adding to 211222463 its reverse (364222112), we get a palindrome (575444575).

The spelling of 211222463 in words is "two hundred eleven million, two hundred twenty-two thousand, four hundred sixty-three".