212616001 has 4 divisors (see below), whose sum is σ = 228971092. Its totient is φ = 196260912.

The previous prime is 212615987. The next prime is 212616017. The reversal of 212616001 is 100616212.

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 29419776 + 183196225 = 5424^2 + 13535^2 .

It is a cyclic number.

It is not a de Polignac number, because 212616001 - 2¹⁹ = 212091713 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 212616001.

It is not an unprimeable number, because it can be changed into a prime (212616091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8177526 + ... + 8177551.

It is an arithmetic number, because the mean of its divisors is an integer number (57242773).

Almost surely, 2^212616001 is an apocalyptic number.

It is an amenable number.

212616001 is a deficient number, since it is larger than the sum of its proper divisors (16355091).

212616001 is a wasteful number, since it uses less digits than its factorization.

212616001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16355090.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 212616001 is about 14581.3579957424. The cubic root of 212616001 is about 596.8501607163.

The spelling of 212616001 in words is "two hundred twelve million, six hundred sixteen thousand, one".