1215000251300 has 36 divisors (see below), whose sum is σ = 2876236961136. Its totient is φ = 441818272800.

The previous prime is 1215000251291. The next prime is 1215000251317. The reversal of 1215000251300 is 31520005121.

It is a happy number.

It is a super-2 number, since 2×1215000251300² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 552271742 + ... + 552273941.

Almost surely, 2^{1215000251300} is an apocalyptic number.

1215000251300 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1215000251300 is an abundant number, since it is smaller than the sum of its proper divisors (1661236709836).

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

1215000251300 is a wasteful number, since it uses less digits than its factorization.

1215000251300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1104545708 (or 1104545701 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 20.

Adding to 1215000251300 its reverse (31520005121), we get a palindrome (1246520256421).

The spelling of 1215000251300 in words is "one trillion, two hundred fifteen billion, two hundred fifty-one thousand, three hundred".