21220302203023 has 16 divisors (see below), whose sum is σ = 26456801792256. Its totient is φ = 16535099715840.

The previous prime is 21220302203003. The next prime is 21220302203041. The reversal of 21220302203023 is 32030220302212.

It is a cyclic number.

It is not a de Polignac number, because 21220302203023 - 2⁹ = 21220302202511 is a prime.

It is a super-2 number, since 2×21220302203023² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21220302202985 and 21220302203003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21220302203003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4878015 + ... + 8138527.

It is an arithmetic number, because the mean of its divisors is an integer number (1653550112016).

Almost surely, 2^{21220302203023} is an apocalyptic number.

21220302203023 is a deficient number, since it is larger than the sum of its proper divisors (5236499589233).

21220302203023 is a wasteful number, since it uses less digits than its factorization.

21220302203023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3345054.

The product of its (nonzero) digits is 1728, while the sum is 22.

Adding to 21220302203023 its reverse (32030220302212), we get a palindrome (53250522505235).

The spelling of 21220302203023 in words is "twenty-one trillion, two hundred twenty billion, three hundred two million, two hundred three thousand, twenty-three".