22038276821 has 4 divisors (see below), whose sum is σ = 24041756544. Its totient is φ = 20034797100.

The previous prime is 22038276809. The next prime is 22038276823. The reversal of 22038276821 is 12867283022.

It is a happy number.

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 a de Polignac number, because none of the positive numbers 2^k-22038276821 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22038276823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1001739845 + ... + 1001739866.

It is an arithmetic number, because the mean of its divisors is an integer number (6010439136).

Almost surely, 2^22038276821 is an apocalyptic number.

It is an amenable number.

22038276821 is a deficient number, since it is larger than the sum of its proper divisors (2003479723).

22038276821 is a wasteful number, since it uses less digits than its factorization.

22038276821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2003479722.

The product of its (nonzero) digits is 129024, while the sum is 41.

The spelling of 22038276821 in words is "twenty-two billion, thirty-eight million, two hundred seventy-six thousand, eight hundred twenty-one".