10221342887 has 4 divisors (see below), whose sum is σ = 11681534736. Its totient is φ = 8761151040.

The previous prime is 10221342881. The next prime is 10221342913. The reversal of 10221342887 is 78824312201.

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 10221342887 - 2⁸ = 10221342631 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 10221342887.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10221342881) 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, 730095914 + ... + 730095927.

It is an arithmetic number, because the mean of its divisors is an integer number (2920383684).

Almost surely, 2^10221342887 is an apocalyptic number.

10221342887 is a deficient number, since it is larger than the sum of its proper divisors (1460191849).

10221342887 is an equidigital number, since it uses as much as digits as its factorization.

10221342887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1460191848.

The product of its (nonzero) digits is 43008, while the sum is 38.

The spelling of 10221342887 in words is "ten billion, two hundred twenty-one million, three hundred forty-two thousand, eight hundred eighty-seven".