211321220204 has 48 divisors (see below), whose sum is σ = 393986436480. Its totient is φ = 98831182080.

The previous prime is 211321220203. The next prime is 211321220233. The reversal of 211321220204 is 402022123112.

It is not an unprimeable number, because it can be changed into a prime (211321220203) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25934459 + ... + 25942605.

It is an arithmetic number, because the mean of its divisors is an integer number (8208050760).

Almost surely, 2^211321220204 is an apocalyptic number.

It is an amenable number.

211321220204 is a deficient number, since it is larger than the sum of its proper divisors (182665216276).

211321220204 is a wasteful number, since it uses less digits than its factorization.

211321220204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10478 (or 10476 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 211321220204 its reverse (402022123112), we get a palindrome (613343343316).

The spelling of 211321220204 in words is "two hundred eleven billion, three hundred twenty-one million, two hundred twenty thousand, two hundred four".