1215102052406 has 16 divisors (see below), whose sum is σ = 2105310508560. Its totient is φ = 519829754880.

The previous prime is 1215102052399. The next prime is 1215102052427. The reversal of 1215102052406 is 6042502015121.

It is a super-2 number, since 2×1215102052406² (a number of 25 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

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, 1624467611 + ... + 1624468358.

It is an arithmetic number, because the mean of its divisors is an integer number (131581906785).

Almost surely, 2^{1215102052406} is an apocalyptic number.

1215102052406 is a deficient number, since it is larger than the sum of its proper divisors (890208456154).

1215102052406 is a wasteful number, since it uses less digits than its factorization.

1215102052406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3248935999.

The product of its (nonzero) digits is 4800, while the sum is 29.

Adding to 1215102052406 its reverse (6042502015121), we get a palindrome (7257604067527).

The spelling of 1215102052406 in words is "one trillion, two hundred fifteen billion, one hundred two million, fifty-two thousand, four hundred six".