2103211220 has 24 divisors (see below), whose sum is σ = 4818266208. Its totient is φ = 764804000.

The previous prime is 2103211199. The next prime is 2103211223. The reversal of 2103211220 is 221123012.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 2103211195 and 2103211204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2103211223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4779806 + ... + 4780245.

It is an arithmetic number, because the mean of its divisors is an integer number (200761092).

Almost surely, 2^2103211220 is an apocalyptic number.

2103211220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2103211220 is an abundant number, since it is smaller than the sum of its proper divisors (2715054988).

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

2103211220 is a wasteful number, since it uses less digits than its factorization.

2103211220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9560071 (or 9560069 counting only the distinct ones).

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

The square root of 2103211220 is about 45860.7808481277. The cubic root of 2103211220 is about 1281.2315661199.

Adding to 2103211220 its reverse (221123012), we get a palindrome (2324334232).

The spelling of 2103211220 in words is "two billion, one hundred three million, two hundred eleven thousand, two hundred twenty".