1215405502203 has 4 divisors (see below), whose sum is σ = 1620540669608. Its totient is φ = 810270334800.

The previous prime is 1215405502159. The next prime is 1215405502237. The reversal of 1215405502203 is 3022055045121.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1215405502203 - 2¹⁸ = 1215405240059 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1215405503203) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 202567583698 + ... + 202567583703.

It is an arithmetic number, because the mean of its divisors is an integer number (405135167402).

Almost surely, 2^{1215405502203} is an apocalyptic number.

1215405502203 is a deficient number, since it is larger than the sum of its proper divisors (405135167405).

1215405502203 is an equidigital number, since it uses as much as digits as its factorization.

1215405502203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 405135167404.

The product of its (nonzero) digits is 12000, while the sum is 30.

The spelling of 1215405502203 in words is "one trillion, two hundred fifteen billion, four hundred five million, five hundred two thousand, two hundred three".