20021302223 has 16 divisors (see below), whose sum is σ = 22676054016. Its totient is φ = 17538444000.

The previous prime is 20021302187. The next prime is 20021302289. The reversal of 20021302223 is 32220312002.

It is a cyclic number.

It is not a de Polignac number, because 20021302223 - 2²² = 20017107919 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20021302123) 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, 225653 + ... + 301598.

It is an arithmetic number, because the mean of its divisors is an integer number (1417253376).

Almost surely, 2^20021302223 is an apocalyptic number.

20021302223 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

20021302223 is a deficient number, since it is larger than the sum of its proper divisors (2654751793).

20021302223 is a wasteful number, since it uses less digits than its factorization.

20021302223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 527414.

The product of its (nonzero) digits is 288, while the sum is 17.

Adding to 20021302223 its reverse (32220312002), we get a palindrome (52241614225).

The spelling of 20021302223 in words is "twenty billion, twenty-one million, three hundred two thousand, two hundred twenty-three".