1210104220 has 72 divisors (see below), whose sum is σ = 2840745600. Its totient is φ = 432357120.

The previous prime is 1210104209. The next prime is 1210104229. The reversal of 1210104220 is 224010121.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a self number, because there is not a number n which added to its sum of digits gives 1210104220.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1210104229) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 99006 + ... + 110554.

It is an arithmetic number, because the mean of its divisors is an integer number (39454800).

Almost surely, 2^1210104220 is an apocalyptic number.

1210104220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1210104220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1420372800).

1210104220 is an abundant number, since it is smaller than the sum of its proper divisors (1630641380).

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

1210104220 is a wasteful number, since it uses less digits than its factorization.

1210104220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11615 (or 11600 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 1210104220 is about 34786.5522867674. The cubic root of 1210104220 is about 1065.6328301211.

Adding to 1210104220 its reverse (224010121), we get a palindrome (1434114341).

The spelling of 1210104220 in words is "one billion, two hundred ten million, one hundred four thousand, two hundred twenty".