211321004 has 6 divisors (see below), whose sum is σ = 369811764. Its totient is φ = 105660500.

The previous prime is 211321001. The next prime is 211321009. The reversal of 211321004 is 400123112.

It is a self number, because there is not a number n which added to its sum of digits gives 211321004.

It is not an unprimeable number, because it can be changed into a prime (211321001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26415122 + ... + 26415129.

It is an arithmetic number, because the mean of its divisors is an integer number (61635294).

Almost surely, 2^211321004 is an apocalyptic number.

It is an amenable number.

211321004 is a deficient number, since it is larger than the sum of its proper divisors (158490760).

211321004 is a wasteful number, since it uses less digits than its factorization.

211321004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52830255 (or 52830253 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 211321004 is about 14536.8842603909. The cubic root of 211321004 is about 595.6359314297.

Adding to 211321004 its reverse (400123112), we get a palindrome (611444116).

The spelling of 211321004 in words is "two hundred eleven million, three hundred twenty-one thousand, four".