211220102204 has 24 divisors (see below), whose sum is σ = 381578469888. Its totient is φ = 102198031920.

The previous prime is 211220102189. The next prime is 211220102239. The reversal of 211220102204 is 402201022112.

It is a super-2 number, since 2×211220102204² (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, 3610007 + ... + 3668049.

It is an arithmetic number, because the mean of its divisors is an integer number (15899102912).

Almost surely, 2^211220102204 is an apocalyptic number.

It is an amenable number.

211220102204 is a deficient number, since it is larger than the sum of its proper divisors (170358367684).

211220102204 is a wasteful number, since it uses less digits than its factorization.

211220102204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87425 (or 87423 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 211220102204 its reverse (402201022112), we get a palindrome (613421124316).

The spelling of 211220102204 in words is "two hundred eleven billion, two hundred twenty million, one hundred two thousand, two hundred four".