211220210104 has 32 divisors (see below), whose sum is σ = 396763012800. Its totient is φ = 105416874880.

The previous prime is 211220210093. The next prime is 211220210141. The reversal of 211220210104 is 401012022112.

It is a super-2 number, since 2×211220210104² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15759534 + ... + 15772930.

It is an arithmetic number, because the mean of its divisors is an integer number (12398844150).

Almost surely, 2^211220210104 is an apocalyptic number.

It is an amenable number.

211220210104 is a deficient number, since it is larger than the sum of its proper divisors (185542802696).

211220210104 is a wasteful number, since it uses less digits than its factorization.

211220210104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16863 (or 16859 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 211220210104 its reverse (401012022112), we get a palindrome (612232232216).

The spelling of 211220210104 in words is "two hundred eleven billion, two hundred twenty million, two hundred ten thousand, one hundred four".