212322001 has 2 divisors, whose sum is σ = 212322002. Its totient is φ = 212322000.

The previous prime is 212321999. The next prime is 212322023. The reversal of 212322001 is 100223212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 204347025 + 7974976 = 14295^2 + 2824^2 .

It is a cyclic number.

It is not a de Polignac number, because 212322001 - 2¹ = 212321999 is a prime.

Together with 212321999, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (212322041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106161000 + 106161001.

It is an arithmetic number, because the mean of its divisors is an integer number (106161001).

Almost surely, 2^212322001 is an apocalyptic number.

It is an amenable number.

212322001 is a deficient number, since it is larger than the sum of its proper divisors (1).

212322001 is an equidigital number, since it uses as much as digits as its factorization.

212322001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 212322001 is about 14571.2731427285. The cubic root of 212322001 is about 596.5749307415.

Adding to 212322001 its reverse (100223212), we get a palindrome (312545213).

The spelling of 212322001 in words is "two hundred twelve million, three hundred twenty-two thousand, one".