22222046021 has 8 divisors (see below), whose sum is σ = 26272369920. Its totient is φ = 18390658608.

The previous prime is 22222046003. The next prime is 22222046023. The reversal of 22222046021 is 12064022222.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 22222046021 - 2¹⁸ = 22221783877 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 (22222046023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54733901 + ... + 54734306.

It is an arithmetic number, because the mean of its divisors is an integer number (3284046240).

Almost surely, 2^22222046021 is an apocalyptic number.

It is an amenable number.

22222046021 is a deficient number, since it is larger than the sum of its proper divisors (4050323899).

22222046021 is a wasteful number, since it uses less digits than its factorization.

22222046021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109468243.

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 22222046021 its reverse (12064022222), we get a palindrome (34286068243).

The spelling of 22222046021 in words is "twenty-two billion, two hundred twenty-two million, forty-six thousand, twenty-one".