21120222020023 has 8 divisors (see below), whose sum is σ = 24137709989760. Its totient is φ = 18102812399160.

The previous prime is 21120222019997. The next prime is 21120222020041. The reversal of 21120222020023 is 32002022202112.

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 21120222020023 - 2⁹ = 21120222019511 is a prime.

It is a super-2 number, since 2×21120222020023² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21120222020083) 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, 19008433 + ... + 20088826.

It is an arithmetic number, because the mean of its divisors is an integer number (3017213748720).

Almost surely, 2^{21120222020023} is an apocalyptic number.

21120222020023 is a deficient number, since it is larger than the sum of its proper divisors (3017487969737).

21120222020023 is an equidigital number, since it uses as much as digits as its factorization.

21120222020023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39174437.

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 21120222020023 its reverse (32002022202112), we get a palindrome (53122244222135).

It can be divided in two parts, 211202 and 22020023, that added together give a square (22231225 = 4715²).

The spelling of 21120222020023 in words is "twenty-one trillion, one hundred twenty billion, two hundred twenty-two million, twenty thousand, twenty-three".