22021120120021 has 8 divisors (see below), whose sum is σ = 24024298967424. Its totient is φ = 20018151078720.

The previous prime is 22021120120007. The next prime is 22021120120133. The reversal of 22021120120021 is 12002102112022.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 22021120120021 - 2⁷ = 22021120119893 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22021120119977 and 22021120120004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22021120124021) 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 7 ways as a sum of consecutive naturals, for example, 52232020 + ... + 52651933.

It is an arithmetic number, because the mean of its divisors is an integer number (3003037370928).

Almost surely, 2^{22021120120021} is an apocalyptic number.

It is an amenable number.

22021120120021 is a deficient number, since it is larger than the sum of its proper divisors (2003178847403).

22021120120021 is a wasteful number, since it uses less digits than its factorization.

22021120120021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104903051.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 22021120120021 its reverse (12002102112022), we get a palindrome (34023222232043).

The spelling of 22021120120021 in words is "twenty-two trillion, twenty-one billion, one hundred twenty million, one hundred twenty thousand, twenty-one".