1210301220 has 96 divisors (see below), whose sum is σ = 3526871040. Its totient is φ = 309859200.

The previous prime is 1210301203. The next prime is 1210301231. The reversal of 1210301220 is 221030121.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 1210301196 and 1210301205.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 148245 + ... + 156195.

It is an arithmetic number, because the mean of its divisors is an integer number (36738240).

Almost surely, 2^1210301220 is an apocalyptic number.

1210301220 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 1210301220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1763435520).

1210301220 is an abundant number, since it is smaller than the sum of its proper divisors (2316569820).

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

1210301220 is a wasteful number, since it uses less digits than its factorization.

1210301220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8065 (or 8063 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 1210301220 is about 34789.3837254988. The cubic root of 1210301220 is about 1065.6906538670.

Adding to 1210301220 its reverse (221030121), we get a palindrome (1431331341).

The spelling of 1210301220 in words is "one billion, two hundred ten million, three hundred one thousand, two hundred twenty".