22004224011021 has 16 divisors (see below), whose sum is σ = 33610270579200. Its totient is φ = 12543833116848.

The previous prime is 22004224011019. The next prime is 22004224011041. The reversal of 22004224011021 is 12011042240022.

It is not a de Polignac number, because 22004224011021 - 2¹ = 22004224011019 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22004224011041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1250373291 + ... + 1250390888.

It is an arithmetic number, because the mean of its divisors is an integer number (2100641911200).

Almost surely, 2^{22004224011021} is an apocalyptic number.

22004224011021 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

22004224011021 is a deficient number, since it is larger than the sum of its proper divisors (11606046568179).

22004224011021 is a wasteful number, since it uses less digits than its factorization.

22004224011021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2500764608.

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 22004224011021 its reverse (12011042240022), we get a palindrome (34015266251043).

The spelling of 22004224011021 in words is "twenty-two trillion, four billion, two hundred twenty-four million, eleven thousand, twenty-one".