212100401 has 8 divisors (see below), whose sum is σ = 224251680. Its totient is φ = 200047968.

The previous prime is 212100349. The next prime is 212100409. The reversal of 212100401 is 104001212.

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 212100401 - 2⁶ = 212100337 is a prime.

It is not an unprimeable number, because it can be changed into a prime (212100409) 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, 20276 + ... + 28901.

It is an arithmetic number, because the mean of its divisors is an integer number (28031460).

Almost surely, 2^212100401 is an apocalyptic number.

It is an amenable number.

212100401 is a deficient number, since it is larger than the sum of its proper divisors (12151279).

212100401 is a wasteful number, since it uses less digits than its factorization.

212100401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49423.

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 212100401 is about 14563.6671549442. The cubic root of 212100401 is about 596.3673105179.

Adding to 212100401 its reverse (104001212), we get a palindrome (316101613).

The spelling of 212100401 in words is "two hundred twelve million, one hundred thousand, four hundred one".