1287207222885 has 96 divisors (see below), whose sum is σ = 2329630617600. Its totient is φ = 656993151360.

The previous prime is 1287207222883. The next prime is 1287207222919. The reversal of 1287207222885 is 5882227027821.

It is not a de Polignac number, because 1287207222885 - 2¹ = 1287207222883 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1287207222881) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 19993176 + ... + 20057454.

It is an arithmetic number, because the mean of its divisors is an integer number (24266985600).

Almost surely, 2^{1287207222885} is an apocalyptic number.

1287207222885 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1287207222885 is a deficient number, since it is larger than the sum of its proper divisors (1042423394715).

1287207222885 is a wasteful number, since it uses less digits than its factorization.

1287207222885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64543 (or 64540 counting only the distinct ones).

The product of its (nonzero) digits is 4014080, while the sum is 54.

The spelling of 1287207222885 in words is "one trillion, two hundred eighty-seven billion, two hundred seven million, two hundred twenty-two thousand, eight hundred eighty-five".