213212001 has 16 divisors (see below), whose sum is σ = 297308160. Its totient is φ = 135656400.

The previous prime is 213211993. The next prime is 213212029. The reversal of 213212001 is 100212312.

It is not a de Polignac number, because 213212001 - 2³ = 213211993 is a prime.

It is not an unprimeable number, because it can be changed into a prime (213212071) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29826 + ... + 36276.

It is an arithmetic number, because the mean of its divisors is an integer number (18581760).

Almost surely, 2^213212001 is an apocalyptic number.

It is an amenable number.

213212001 is a deficient number, since it is larger than the sum of its proper divisors (84096159).

213212001 is a wasteful number, since it uses less digits than its factorization.

213212001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6956.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 213212001 is about 14601.7807475664. The cubic root of 213212001 is about 597.4073323722.

Adding to 213212001 its reverse (100212312), we get a palindrome (313424313).

The spelling of 213212001 in words is "two hundred thirteen million, two hundred twelve thousand, one".