1215101320240 has 40 divisors (see below), whose sum is σ = 2827984720608. Its totient is φ = 485546050560.

The previous prime is 1215101320219. The next prime is 1215101320253. The reversal of 1215101320240 is 420231015121.

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7647081 + ... + 7804360.

Almost surely, 2^{1215101320240} is an apocalyptic number.

1215101320240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1215101320240 is an abundant number, since it is smaller than the sum of its proper divisors (1612883400368).

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

1215101320240 is a wasteful number, since it uses less digits than its factorization.

1215101320240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15452437 (or 15452431 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 22.

Adding to 1215101320240 its reverse (420231015121), we get a palindrome (1635332335361).

The spelling of 1215101320240 in words is "one trillion, two hundred fifteen billion, one hundred one million, three hundred twenty thousand, two hundred forty".