20021030030 has 8 divisors (see below), whose sum is σ = 36037854072. Its totient is φ = 8008412008.

The previous prime is 20021030023. The next prime is 20021030039. The reversal of 20021030030 is 3003012002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 20021029993 and 20021030020.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20021030039) 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, 1001051492 + ... + 1001051511.

It is an arithmetic number, because the mean of its divisors is an integer number (4504731759).

Almost surely, 2^20021030030 is an apocalyptic number.

20021030030 is a deficient number, since it is larger than the sum of its proper divisors (16016824042).

20021030030 is a wasteful number, since it uses less digits than its factorization.

20021030030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2002103010.

The product of its (nonzero) digits is 36, while the sum is 11.

Adding to 20021030030 its reverse (3003012002), we get a palindrome (23024042032).

The spelling of 20021030030 in words is "twenty billion, twenty-one million, thirty thousand, thirty".