212320001 has 2 divisors, whose sum is σ = 212320002. Its totient is φ = 212320000.

The previous prime is 212319979. The next prime is 212320007. The reversal of 212320001 is 100023212.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 208513600 + 3806401 = 14440^2 + 1951^2 .

It is a cyclic number.

It is not a de Polignac number, because 212320001 - 2²⁶ = 145211137 is a prime.

It is not a weakly prime, because it can be changed into another prime (212320007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106160000 + 106160001.

It is an arithmetic number, because the mean of its divisors is an integer number (106160001).

Almost surely, 2^212320001 is an apocalyptic number.

It is an amenable number.

212320001 is a deficient number, since it is larger than the sum of its proper divisors (1).

212320001 is an equidigital number, since it uses as much as digits as its factorization.

212320001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 212320001 is about 14571.2045143838. The cubic root of 212320001 is about 596.5730575590.

Adding to 212320001 its reverse (100023212), we get a palindrome (312343213).

The spelling of 212320001 in words is "two hundred twelve million, three hundred twenty thousand, one".