211404002 has 4 divisors (see below), whose sum is σ = 317106006. Its totient is φ = 105702000.

The previous prime is 211403999. The next prime is 211404007. The reversal of 211404002 is 200404112.

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

It can be written as a sum of positive squares in only one way, i.e., 117527281 + 93876721 = 10841^2 + 9689^2 .

It is not an unprimeable number, because it can be changed into a prime (211404007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52850999 + ... + 52851002.

Almost surely, 2^211404002 is an apocalyptic number.

211404002 is a deficient number, since it is larger than the sum of its proper divisors (105702004).

211404002 is a wasteful number, since it uses less digits than its factorization.

211404002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105702003.

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 211404002 is about 14539.7387184227. The cubic root of 211404002 is about 595.7139014678.

Adding to 211404002 its reverse (200404112), we get a palindrome (411808114).

The spelling of 211404002 in words is "two hundred eleven million, four hundred four thousand, two".