212175001 has 2 divisors, whose sum is σ = 212175002. Its totient is φ = 212175000.

The previous prime is 212174999. The next prime is 212175013. The reversal of 212175001 is 100571212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 148254976 + 63920025 = 12176^2 + 7995^2 .

It is a cyclic number.

It is not a de Polignac number, because 212175001 - 2¹ = 212174999 is a prime.

Together with 212174999, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 212175001.

It is not a weakly prime, because it can be changed into another prime (212175091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106087500 + 106087501.

It is an arithmetic number, because the mean of its divisors is an integer number (106087501).

Almost surely, 2^212175001 is an apocalyptic number.

It is an amenable number.

212175001 is a deficient number, since it is larger than the sum of its proper divisors (1).

212175001 is an equidigital number, since it uses as much as digits as its factorization.

212175001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 140, while the sum is 19.

The square root of 212175001 is about 14566.2280978982. The cubic root of 212175001 is about 596.4372204698.

The spelling of 212175001 in words is "two hundred twelve million, one hundred seventy-five thousand, one".