84425112221 has 4 divisors (see below), whose sum is σ = 88868539200. Its totient is φ = 79981685244.

The previous prime is 84425112203. The next prime is 84425112281. The reversal of 84425112221 is 12221152448.

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 a cyclic number.

It is not a de Polignac number, because 84425112221 - 2¹⁴ = 84425095837 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 (84425112281) 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, 2221713461 + ... + 2221713498.

It is an arithmetic number, because the mean of its divisors is an integer number (22217134800).

Almost surely, 2^84425112221 is an apocalyptic number.

It is an amenable number.

84425112221 is a deficient number, since it is larger than the sum of its proper divisors (4443426979).

84425112221 is a wasteful number, since it uses less digits than its factorization.

84425112221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4443426978.

The product of its digits is 10240, while the sum is 32.

Adding to 84425112221 its reverse (12221152448), we get a palindrome (96646264669).

The spelling of 84425112221 in words is "eighty-four billion, four hundred twenty-five million, one hundred twelve thousand, two hundred twenty-one".