870876021121 has 4 divisors (see below), whose sum is σ = 916711601200. Its totient is φ = 825040441044.

The previous prime is 870876021109. The next prime is 870876021133. The reversal of 870876021121 is 121120678078.

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.

It is an interprime number because it is at equal distance from previous prime (870876021109) and next prime (870876021133).

It is a cyclic number.

It is not a de Polignac number, because 870876021121 - 2¹¹ = 870876019073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (870876021101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22917790011 + ... + 22917790048.

It is an arithmetic number, because the mean of its divisors is an integer number (229177900300).

Almost surely, 2^870876021121 is an apocalyptic number.

It is an amenable number.

870876021121 is a deficient number, since it is larger than the sum of its proper divisors (45835580079).

870876021121 is a wasteful number, since it uses less digits than its factorization.

870876021121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45835580078.

The product of its (nonzero) digits is 75264, while the sum is 43.

Adding to 870876021121 its reverse (121120678078), we get a palindrome (991996699199).

The spelling of 870876021121 in words is "eight hundred seventy billion, eight hundred seventy-six million, twenty-one thousand, one hundred twenty-one".