1215102510253 has 8 divisors (see below), whose sum is σ = 1241006704128. Its totient is φ = 1189200439344.

The previous prime is 1215102510191. The next prime is 1215102510283. The reversal of 1215102510253 is 3520152015121.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1215102510253 - 2²¹ = 1215100413101 is a prime.

It is a super-2 number, since 2×1215102510253² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1215102510283) 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, 654075 + ... + 1690567.

It is an arithmetic number, because the mean of its divisors is an integer number (155125838016).

Almost surely, 2^{1215102510253} is an apocalyptic number.

It is an amenable number.

1215102510253 is a deficient number, since it is larger than the sum of its proper divisors (25904193875).

1215102510253 is a wasteful number, since it uses less digits than its factorization.

1215102510253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1061483.

The product of its (nonzero) digits is 3000, while the sum is 28.

Adding to 1215102510253 its reverse (3520152015121), we get a palindrome (4735254525374).

The spelling of 1215102510253 in words is "one trillion, two hundred fifteen billion, one hundred two million, five hundred ten thousand, two hundred fifty-three".