1215130120 has 64 divisors (see below), whose sum is σ = 2866026240. Its totient is φ = 463142400.

The previous prime is 1215130117. The next prime is 1215130127. The reversal of 1215130120 is 210315121.

It is a junction number, because it is equal to n+sod(n) for n = 1215130094 and 1215130103.

It is not an unprimeable number, because it can be changed into a prime (1215130127) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61905 + ... + 79135.

It is an arithmetic number, because the mean of its divisors is an integer number (44781660).

Almost surely, 2^1215130120 is an apocalyptic number.

1215130120 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 1215130120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1433013120).

1215130120 is an abundant number, since it is smaller than the sum of its proper divisors (1650896120).

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

1215130120 is a wasteful number, since it uses less digits than its factorization.

1215130120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17326 (or 17322 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 16.

The square root of 1215130120 is about 34858.7165569818. The cubic root of 1215130120 is about 1067.1060824117.

Adding to 1215130120 its reverse (210315121), we get a palindrome (1425445241).

The spelling of 1215130120 in words is "one billion, two hundred fifteen million, one hundred thirty thousand, one hundred twenty".