212164603 has 4 divisors (see below), whose sum is σ = 242473840. Its totient is φ = 181855368.

The previous prime is 212164577. The next prime is 212164633. The reversal of 212164603 is 306461212.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212164603 is a prime.

It is a super-2 number, since 2×212164603² = 90027637532295218, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (212164633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15154608 + ... + 15154621.

It is an arithmetic number, because the mean of its divisors is an integer number (60618460).

Almost surely, 2^212164603 is an apocalyptic number.

212164603 is a deficient number, since it is larger than the sum of its proper divisors (30309237).

212164603 is an equidigital number, since it uses as much as digits as its factorization.

212164603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30309236.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 212164603 is about 14565.8711720240. The cubic root of 212164603 is about 596.4274771675.

The spelling of 212164603 in words is "two hundred twelve million, one hundred sixty-four thousand, six hundred three".