212523001 has 4 divisors (see below), whose sum is σ = 225024372. Its totient is φ = 200021632.

The previous prime is 212522983. The next prime is 212523007. The reversal of 212523001 is 100325212.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 180203776 + 32319225 = 13424^2 + 5685^2 .

It is a cyclic number.

It is not a de Polignac number, because 212523001 - 2⁵ = 212522969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212523007) 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, 6250660 + ... + 6250693.

It is an arithmetic number, because the mean of its divisors is an integer number (56256093).

Almost surely, 2^212523001 is an apocalyptic number.

It is an amenable number.

212523001 is a deficient number, since it is larger than the sum of its proper divisors (12501371).

212523001 is a wasteful number, since it uses less digits than its factorization.

212523001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12501370.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 212523001 is about 14578.1686435574. The cubic root of 212523001 is about 596.7631256237.

Adding to 212523001 its reverse (100325212), we get a palindrome (312848213).

The spelling of 212523001 in words is "two hundred twelve million, five hundred twenty-three thousand, one".