212401211 has 8 divisors (see below), whose sum is σ = 231829104. Its totient is φ = 192993120.

The previous prime is 212401177. The next prime is 212401237. The reversal of 212401211 is 112104212.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 212401211 - 2¹⁴ = 212384827 is a prime.

It is a super-2 number, since 2×212401211² = 90228548868533042, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212401411) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25841 + ... + 33053.

It is an arithmetic number, because the mean of its divisors is an integer number (28978638).

Almost surely, 2^212401211 is an apocalyptic number.

212401211 is a deficient number, since it is larger than the sum of its proper divisors (19427893).

212401211 is a wasteful number, since it uses less digits than its factorization.

212401211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9901.

The product of its (nonzero) digits is 32, while the sum is 14.

The square root of 212401211 is about 14573.9909084643. The cubic root of 212401211 is about 596.6491086802.

Adding to 212401211 its reverse (112104212), we get a palindrome (324505423).

The spelling of 212401211 in words is "two hundred twelve million, four hundred one thousand, two hundred eleven".