211222413 has 6 divisors (see below), whose sum is σ = 305099054. Its totient is φ = 140814936.

The previous prime is 211222397. The next prime is 211222469. The reversal of 211222413 is 314222112.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 180552969 + 30669444 = 13437^2 + 5538^2 .

It is not a de Polignac number, because 211222413 - 2⁴ = 211222397 is a prime.

It is a super-2 number, since 2×211222413² = 89229815507085138, 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 (211222483) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11734570 + ... + 11734587.

Almost surely, 2^211222413 is an apocalyptic number.

It is an amenable number.

211222413 is a deficient number, since it is larger than the sum of its proper divisors (93876641).

211222413 is a wasteful number, since it uses less digits than its factorization.

211222413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23469163 (or 23469160 counting only the distinct ones).

The product of its digits is 192, while the sum is 18.

The square root of 211222413 is about 14533.4928011129. The cubic root of 211222413 is about 595.5432864710.

Adding to 211222413 its reverse (314222112), we get a palindrome (525444525).

The spelling of 211222413 in words is "two hundred eleven million, two hundred twenty-two thousand, four hundred thirteen".