20021111030 has 16 divisors (see below), whose sum is σ = 36297268560. Its totient is φ = 7950829152.

The previous prime is 20021111023. The next prime is 20021111039. The reversal of 20021111030 is 3011112002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20021111039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7200449 + ... + 7203228.

It is an arithmetic number, because the mean of its divisors is an integer number (2268579285).

Almost surely, 2^20021111030 is an apocalyptic number.

20021111030 is a deficient number, since it is larger than the sum of its proper divisors (16276157530).

20021111030 is a wasteful number, since it uses less digits than its factorization.

20021111030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14403823.

The product of its (nonzero) digits is 12, while the sum is 11.

Adding to 20021111030 its reverse (3011112002), we get a palindrome (23032223032).

The spelling of 20021111030 in words is "twenty billion, twenty-one million, one hundred eleven thousand, thirty".