20021013230 has 16 divisors (see below), whose sum is σ = 36094056624. Its totient is φ = 7995909120.

The previous prime is 20021013227. The next prime is 20021013239. The reversal of 20021013230 is 3231012002.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20021013239) 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, 1555292 + ... + 1568111.

It is an arithmetic number, because the mean of its divisors is an integer number (2255878539).

Almost surely, 2^20021013230 is an apocalyptic number.

20021013230 is a deficient number, since it is larger than the sum of its proper divisors (16073043394).

20021013230 is a wasteful number, since it uses less digits than its factorization.

20021013230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3124051.

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 20021013230 its reverse (3231012002), we get a palindrome (23252025232).

The spelling of 20021013230 in words is "twenty billion, twenty-one million, thirteen thousand, two hundred thirty".