12520002191 has 8 divisors (see below), whose sum is σ = 12635264544. Its totient is φ = 12405219840.

The previous prime is 12520002181. The next prime is 12520002197. The reversal of 12520002191 is 19120002521.

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 12520002191 - 2¹⁰ = 12520001167 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12520002197) 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, 67490 + ... + 172031.

It is an arithmetic number, because the mean of its divisors is an integer number (1579408068).

Almost surely, 2^12520002191 is an apocalyptic number.

12520002191 is a deficient number, since it is larger than the sum of its proper divisors (115262353).

12520002191 is a wasteful number, since it uses less digits than its factorization.

12520002191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240001.

The product of its (nonzero) digits is 360, while the sum is 23.

The spelling of 12520002191 in words is "twelve billion, five hundred twenty million, two thousand, one hundred ninety-one".