22110020220021 has 4 divisors (see below), whose sum is σ = 29480026960032. Its totient is φ = 14740013480012.

The previous prime is 22110020219993. The next prime is 22110020220023. The reversal of 22110020220021 is 12002202001122.

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 22110020220021 - 2¹⁹ = 22110019695733 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22110020220023) 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, 3685003370001 + ... + 3685003370006.

It is an arithmetic number, because the mean of its divisors is an integer number (7370006740008).

Almost surely, 2^{22110020220021} is an apocalyptic number.

It is an amenable number.

22110020220021 is a deficient number, since it is larger than the sum of its proper divisors (7370006740011).

22110020220021 is an equidigital number, since it uses as much as digits as its factorization.

22110020220021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7370006740010.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 22110020220021 its reverse (12002202001122), we get a palindrome (34112222221143).

The spelling of 22110020220021 in words is "twenty-two trillion, one hundred ten billion, twenty million, two hundred twenty thousand, twenty-one".