22020143 has 4 divisors (see below), whose sum is σ = 22615320. Its totient is φ = 21424968.

The previous prime is 22020133. The next prime is 22020161. The reversal of 22020143 is 34102022.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34102022 = 2 ⋅17051011.

It is a cyclic number.

It is not a de Polignac number, because 22020143 - 2⁴ = 22020127 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22020133) 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, 297533 + ... + 297606.

It is an arithmetic number, because the mean of its divisors is an integer number (5653830).

Almost surely, 2^22020143 is an apocalyptic number.

22020143 is a deficient number, since it is larger than the sum of its proper divisors (595177).

22020143 is an equidigital number, since it uses as much as digits as its factorization.

22020143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 595176.

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 22020143 is about 4692.5625195622. The cubic root of 22020143 is about 280.2894243704.

Adding to 22020143 its reverse (34102022), we get a palindrome (56122165).

The spelling of 22020143 in words is "twenty-two million, twenty thousand, one hundred forty-three".