63212121587 has 4 divisors (see below), whose sum is σ = 63403095096. Its totient is φ = 63021148080.

The previous prime is 63212121571. The next prime is 63212121593. The reversal of 63212121587 is 78512121236.

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

It is a cyclic number.

It is not a de Polignac number, because 63212121587 - 2⁴ = 63212121571 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 63212121587.

It is not an unprimeable number, because it can be changed into a prime (63212121487) 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, 95486258 + ... + 95486919.

It is an arithmetic number, because the mean of its divisors is an integer number (15850773774).

Almost surely, 2^63212121587 is an apocalyptic number.

63212121587 is a deficient number, since it is larger than the sum of its proper divisors (190973509).

63212121587 is a wasteful number, since it uses less digits than its factorization.

63212121587 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190973508.

The product of its digits is 40320, while the sum is 38.

The spelling of 63212121587 in words is "sixty-three billion, two hundred twelve million, one hundred twenty-one thousand, five hundred eighty-seven".