211221314 has 4 divisors (see below), whose sum is σ = 316831974. Its totient is φ = 105610656.

The previous prime is 211221313. The next prime is 211221331. The reversal of 211221314 is 413122112.

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

It can be written as a sum of positive squares in only one way, i.e., 211208089 + 13225 = 14533^2 + 115^2 .

It is a super-2 number, since 2×211221314² = 89228886975773192, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 211221292 and 211221301.

It is not an unprimeable number, because it can be changed into a prime (211221313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52805327 + ... + 52805330.

Almost surely, 2^211221314 is an apocalyptic number.

211221314 is a deficient number, since it is larger than the sum of its proper divisors (105610660).

211221314 is a wasteful number, since it uses less digits than its factorization.

211221314 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105610659.

The product of its digits is 96, while the sum is 17.

The square root of 211221314 is about 14533.4549918455. The cubic root of 211221314 is about 595.5422535895.

Adding to 211221314 its reverse (413122112), we get a palindrome (624343426).

The spelling of 211221314 in words is "two hundred eleven million, two hundred twenty-one thousand, three hundred fourteen".