1213112010 has 128 divisors (see below), whose sum is σ = 3397863168. Its totient is φ = 273920000.

The previous prime is 1213112009. The next prime is 1213112011. The reversal of 1213112010 is 102113121.

It is an interprime number because it is at equal distance from previous prime (1213112009) and next prime (1213112011).

It is not an unprimeable number, because it can be changed into a prime (1213112011) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 565540 + ... + 567680.

It is an arithmetic number, because the mean of its divisors is an integer number (26545806).

Almost surely, 2^1213112010 is an apocalyptic number.

1213112010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1213112010, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1698931584).

1213112010 is an abundant number, since it is smaller than the sum of its proper divisors (2184751158).

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

1213112010 is a wasteful number, since it uses less digits than its factorization.

1213112010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2280.

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

The square root of 1213112010 is about 34829.7575357624. The cubic root of 1213112010 is about 1066.5149987264.

Adding to 1213112010 its reverse (102113121), we get a palindrome (1315225131).

It can be divided in two parts, 121311 and 2010, that added together give a palindrome (123321).

The spelling of 1213112010 in words is "one billion, two hundred thirteen million, one hundred twelve thousand, ten".