211211103210 has 48 divisors (see below), whose sum is σ = 524988992736. Its totient is φ = 54380783296.

The previous prime is 211211103193. The next prime is 211211103227. The reversal of 211211103210 is 12301112112.

It is an interprime number because it is at equal distance from previous prime (211211103193) and next prime (211211103227).

It is a super-2 number, since 2×211211103210² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 211211103210.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4160484 + ... + 4210943.

It is an arithmetic number, because the mean of its divisors is an integer number (10937270682).

Almost surely, 2^211211103210 is an apocalyptic number.

211211103210 is an abundant number, since it is smaller than the sum of its proper divisors (313777889526).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

211211103210 is a wasteful number, since it uses less digits than its factorization.

211211103210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8371495 (or 8371466 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 211211103210 its reverse (12301112112), we get a palindrome (223512215322).

The spelling of 211211103210 in words is "two hundred eleven billion, two hundred eleven million, one hundred three thousand, two hundred ten".