282712991021 has 4 divisors (see below), whose sum is σ = 282738979392. Its totient is φ = 282687002652.

The previous prime is 282712990951. The next prime is 282712991051. The reversal of 282712991021 is 120199217282.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 120199217282 = 2 ⋅60099608641.

It is a cyclic number.

It is not a de Polignac number, because 282712991021 - 2²⁶ = 282645882157 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 (282712991051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12977861 + ... + 12999626.

It is an arithmetic number, because the mean of its divisors is an integer number (70684744848).

Almost surely, 2^282712991021 is an apocalyptic number.

It is an amenable number.

282712991021 is a deficient number, since it is larger than the sum of its proper divisors (25988371).

282712991021 is a wasteful number, since it uses less digits than its factorization.

282712991021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25988370.

The product of its (nonzero) digits is 72576, while the sum is 44.

The spelling of 282712991021 in words is "two hundred eighty-two billion, seven hundred twelve million, nine hundred ninety-one thousand, twenty-one".