212401333 has 4 divisors (see below), whose sum is σ = 212760108. Its totient is φ = 212042560.

The previous prime is 212401309. The next prime is 212401339. The reversal of 212401333 is 333104212.

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

It can be written as a sum of positive squares in 2 ways, for example, as 141538609 + 70862724 = 11897^2 + 8418^2 .

It is a cyclic number.

It is not a de Polignac number, because 212401333 - 2²¹ = 210304181 is a prime.

It is a super-2 number, since 2×212401333² = 90228652520353778, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 212401333.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212401339) 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, 178498 + ... + 179683.

It is an arithmetic number, because the mean of its divisors is an integer number (53190027).

Almost surely, 2^212401333 is an apocalyptic number.

It is an amenable number.

212401333 is a deficient number, since it is larger than the sum of its proper divisors (358775).

212401333 is an equidigital number, since it uses as much as digits as its factorization.

212401333 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 358774.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 212401333 is about 14573.9950940022. The cubic root of 212401333 is about 596.6492229156.

Adding to 212401333 its reverse (333104212), we get a palindrome (545505545).

The spelling of 212401333 in words is "two hundred twelve million, four hundred one thousand, three hundred thirty-three".