212001401 has 4 divisors (see below), whose sum is σ = 212060304. Its totient is φ = 211942500.

The previous prime is 212001371. The next prime is 212001409. The reversal of 212001401 is 104100212.

212001401 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212001401 is a prime.

It is a super-4 number, since 4×212001401⁴ (a number of 34 digits) contains 4444 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212001409) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23675 + ... + 31376.

It is an arithmetic number, because the mean of its divisors is an integer number (53015076).

Almost surely, 2^212001401 is an apocalyptic number.

It is an amenable number.

212001401 is a deficient number, since it is larger than the sum of its proper divisors (58903).

212001401 is an equidigital number, since it uses as much as digits as its factorization.

212001401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58902.

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

The square root of 212001401 is about 14560.2678890191. The cubic root of 212001401 is about 596.2745092601.

Adding to 212001401 its reverse (104100212), we get a palindrome (316101613).

The spelling of 212001401 in words is "two hundred twelve million, one thousand, four hundred one".