22121004041 has 4 divisors (see below), whose sum is σ = 22122270612. Its totient is φ = 22119737472.

The previous prime is 22121004007. The next prime is 22121004053. The reversal of 22121004041 is 14040012122.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 16803677641 + 5317326400 = 129629^2 + 72920^2 .

It is a cyclic number.

It is not a de Polignac number, because 22121004041 - 2¹⁰ = 22121003017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22121004341) 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, 606716 + ... + 642141.

It is an arithmetic number, because the mean of its divisors is an integer number (5530567653).

Almost surely, 2^22121004041 is an apocalyptic number.

It is an amenable number.

22121004041 is a deficient number, since it is larger than the sum of its proper divisors (1266571).

22121004041 is a wasteful number, since it uses less digits than its factorization.

22121004041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1266570.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 22121004041 its reverse (14040012122), we get a palindrome (36161016163).

The spelling of 22121004041 in words is "twenty-two billion, one hundred twenty-one million, four thousand, forty-one".