20011220230 has 16 divisors (see below), whose sum is σ = 36993715920. Its totient is φ = 7788150432.

The previous prime is 20011220213. The next prime is 20011220231. The reversal of 20011220230 is 3202211002.

It is a super-2 number, since 2×20011220230² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20011220230.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20011220231) 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, 27041820 + ... + 27042559.

It is an arithmetic number, because the mean of its divisors is an integer number (2312107245).

Almost surely, 2^20011220230 is an apocalyptic number.

20011220230 is a deficient number, since it is larger than the sum of its proper divisors (16982495690).

20011220230 is a wasteful number, since it uses less digits than its factorization.

20011220230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54084423.

The product of its (nonzero) digits is 48, while the sum is 13.

Adding to 20011220230 its reverse (3202211002), we get a palindrome (23213431232).

The spelling of 20011220230 in words is "twenty billion, eleven million, two hundred twenty thousand, two hundred thirty".