212664001 has 4 divisors (see below), whose sum is σ = 231997104. Its totient is φ = 193330900.

The previous prime is 212663953. The next prime is 212664013. The reversal of 212664001 is 100466212.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 212664001 - 2¹⁵ = 212631233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212664031) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9666535 + ... + 9666556.

It is an arithmetic number, because the mean of its divisors is an integer number (57999276).

Almost surely, 2^212664001 is an apocalyptic number.

It is an amenable number.

212664001 is a deficient number, since it is larger than the sum of its proper divisors (19333103).

212664001 is a wasteful number, since it uses less digits than its factorization.

212664001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19333102.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 212664001 is about 14583.0038400873. The cubic root of 212664001 is about 596.8950721245.

The spelling of 212664001 in words is "two hundred twelve million, six hundred sixty-four thousand, one".