1210220312 has 32 divisors (see below), whose sum is σ = 2606929920. Its totient is φ = 515945760.

The previous prime is 1210220311. The next prime is 1210220317. The reversal of 1210220312 is 2130220121.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1210220311) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 45878 + ... + 67269.

It is an arithmetic number, because the mean of its divisors is an integer number (81466560).

Almost surely, 2^1210220312 is an apocalyptic number.

It is an amenable number.

1210220312 is an abundant number, since it is smaller than the sum of its proper divisors (1396709608).

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

1210220312 is a wasteful number, since it uses less digits than its factorization.

1210220312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113351 (or 113347 counting only the distinct ones).

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

The square root of 1210220312 is about 34788.2208800623. The cubic root of 1210220312 is about 1065.6669063845. Note that the first 3 decimals are identical.

Adding to 1210220312 its reverse (2130220121), we get a palindrome (3340440433).

The spelling of 1210220312 in words is "one billion, two hundred ten million, two hundred twenty thousand, three hundred twelve".