211240422 has 12 divisors (see below), whose sum is σ = 457687620. Its totient is φ = 70413468.

The previous prime is 211240411. The next prime is 211240433. The reversal of 211240422 is 224042112.

211240422 is a `hidden beast` number, since 2 + 1 + 1 + 240 + 422 = 666.

It is an interprime number because it is at equal distance from previous prime (211240411) and next prime (211240433).

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 11735579 = 211240422 / (2 + 1 + 1 + 2 + 4 + 0 + 4 + 2 + 2).

It is a junction number, because it is equal to n+sod(n) for n = 211240395 and 211240404.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5867772 + ... + 5867807.

It is an arithmetic number, because the mean of its divisors is an integer number (38140635).

Almost surely, 2^211240422 is an apocalyptic number.

211240422 is an abundant number, since it is smaller than the sum of its proper divisors (246447198).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

211240422 is a wasteful number, since it uses less digits than its factorization.

211240422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11735587 (or 11735584 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

The square root of 211240422 is about 14534.1123567970. The cubic root of 211240422 is about 595.5602114966.

Adding to 211240422 its reverse (224042112), we get a palindrome (435282534).

The spelling of 211240422 in words is "two hundred eleven million, two hundred forty thousand, four hundred twenty-two".