212233331 has 2 divisors, whose sum is σ = 212233332. Its totient is φ = 212233330.

The previous prime is 212233309. The next prime is 212233361. The reversal of 212233331 is 133332212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 212233331 - 2⁶ = 212233267 is a prime.

It is a super-2 number, since 2×212233331² = 90085973574711122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (212233361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106116665 + 106116666.

It is an arithmetic number, because the mean of its divisors is an integer number (106116666).

Almost surely, 2^212233331 is an apocalyptic number.

212233331 is a deficient number, since it is larger than the sum of its proper divisors (1).

212233331 is an equidigital number, since it uses as much as digits as its factorization.

212233331 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 648, while the sum is 20.

The square root of 212233331 is about 14568.2301945020. The cubic root of 212233331 is about 596.4918718901.

Adding to 212233331 its reverse (133332212), we get a palindrome (345565543).

It can be divided in two parts, 2122 and 33331, that added together give a palindrome (35453).

The spelling of 212233331 in words is "two hundred twelve million, two hundred thirty-three thousand, three hundred thirty-one".