1213210120 has 32 divisors (see below), whose sum is σ = 2731734720. Its totient is φ = 484926400.

The previous prime is 1213210111. The next prime is 1213210129. The reversal of 1213210120 is 210123121.

1213210120 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (1213210111) and next prime (1213210129).

It is a self number, because there is not a number n which added to its sum of digits gives 1213210120.

It is not an unprimeable number, because it can be changed into a prime (1213210129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47589 + ... + 68491.

It is an arithmetic number, because the mean of its divisors is an integer number (85366710).

Almost surely, 2^1213210120 is an apocalyptic number.

1213210120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1213210120 is an abundant number, since it is smaller than the sum of its proper divisors (1518524600).

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

1213210120 is a wasteful number, since it uses less digits than its factorization.

1213210120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22365 (or 22361 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 1213210120 is about 34831.1659293800. The cubic root of 1213210120 is about 1066.5437492910.

Adding to 1213210120 its reverse (210123121), we get a palindrome (1423333241).

The spelling of 1213210120 in words is "one billion, two hundred thirteen million, two hundred ten thousand, one hundred twenty".