212227331 has 8 divisors (see below), whose sum is σ = 215308800. Its totient is φ = 209166408.

The previous prime is 212227319. The next prime is 212227339. The reversal of 212227331 is 133722212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 212227331 - 2²² = 208033027 is a prime.

It is a super-2 number, since 2×212227331² = 90080880046767122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212227297 and 212227306.

It is not an unprimeable number, because it can be changed into a prime (212227339) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16310 + ... + 26276.

It is an arithmetic number, because the mean of its divisors is an integer number (26913600).

Almost surely, 2^212227331 is an apocalyptic number.

212227331 is a deficient number, since it is larger than the sum of its proper divisors (3081469).

212227331 is a wasteful number, since it uses less digits than its factorization.

212227331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10273.

The product of its digits is 1008, while the sum is 23.

The square root of 212227331 is about 14568.0242654932. The cubic root of 212227331 is about 596.4862507420.

Adding to 212227331 its reverse (133722212), we get a palindrome (345949543).

The spelling of 212227331 in words is "two hundred twelve million, two hundred twenty-seven thousand, three hundred thirty-one".