20420233342223 has 64 divisors (see below), whose sum is σ = 24747066086400. Its totient is φ = 16604009856000.

The previous prime is 20420233342207. The next prime is 20420233342231. The reversal of 20420233342223 is 32224333202402.

It is a cyclic number.

It is not a de Polignac number, because 20420233342223 - 2⁴ = 20420233342207 is a prime.

It is a super-4 number, since 4×20420233342223⁴ (a number of 54 digits) contains 4444 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20420233342223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20420233342823) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 798307448 + ... + 798333026.

It is an arithmetic number, because the mean of its divisors is an integer number (386672907600).

Almost surely, 2^{20420233342223} is an apocalyptic number.

20420233342223 is a deficient number, since it is larger than the sum of its proper divisors (4326832744177).

20420233342223 is a wasteful number, since it uses less digits than its factorization.

20420233342223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27024.

The product of its (nonzero) digits is 82944, while the sum is 32.

Adding to 20420233342223 its reverse (32224333202402), we get a palindrome (52644566544625).

The spelling of 20420233342223 in words is "twenty trillion, four hundred twenty billion, two hundred thirty-three million, three hundred forty-two thousand, two hundred twenty-three".