211442224 has 20 divisors (see below), whose sum is σ = 468193744. Its totient is φ = 90618048.

The previous prime is 211442221. The next prime is 211442239. The reversal of 211442224 is 422244112.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 211442195 and 211442204.

It is not an unprimeable number, because it can be changed into a prime (211442221) 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, 943827 + ... + 944050.

Almost surely, 2^211442224 is an apocalyptic number.

It is an amenable number.

211442224 is an abundant number, since it is smaller than the sum of its proper divisors (256751520).

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

211442224 is a wasteful number, since it uses less digits than its factorization.

211442224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1887892 (or 1887886 counting only the distinct ones).

The product of its digits is 1024, while the sum is 22.

The square root of 211442224 is about 14541.0530567769. The cubic root of 211442224 is about 595.7498011424.

Adding to 211442224 its reverse (422244112), we get a palindrome (633686336).

The spelling of 211442224 in words is "two hundred eleven million, four hundred forty-two thousand, two hundred twenty-four".