1210320012 has 48 divisors (see below), whose sum is σ = 3094705152. Its totient is φ = 365110080.

The previous prime is 1210319963. The next prime is 1210320029. The reversal of 1210320012 is 2100230121.

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

It is a self number, because there is not a number n which added to its sum of digits gives 1210320012.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8878 + ... + 49994.

It is an arithmetic number, because the mean of its divisors is an integer number (64473024).

Almost surely, 2^1210320012 is an apocalyptic number.

1210320012 is a gapful number since it is divisible by the number (12) 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 1210320012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1547352576).

1210320012 is an abundant number, since it is smaller than the sum of its proper divisors (1884385140).

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

1210320012 is a wasteful number, since it uses less digits than its factorization.

1210320012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41358 (or 41356 counting only the distinct ones).

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

The square root of 1210320012 is about 34789.6538068432. The cubic root of 1210320012 is about 1065.6961693961.

Adding to 1210320012 its reverse (2100230121), we get a palindrome (3310550133).

The spelling of 1210320012 in words is "one billion, two hundred ten million, three hundred twenty thousand, twelve".