20021303630 has 16 divisors (see below), whose sum is σ = 36040099824. Its totient is φ = 8008131840.

The previous prime is 20021303623. The next prime is 20021303633. The reversal of 20021303630 is 3630312002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20021303633) 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, 260765 + ... + 328695.

It is an arithmetic number, because the mean of its divisors is an integer number (2252506239).

Almost surely, 2^20021303630 is an apocalyptic number.

20021303630 is a deficient number, since it is larger than the sum of its proper divisors (16018796194).

20021303630 is a wasteful number, since it uses less digits than its factorization.

20021303630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97411.

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 20021303630 its reverse (3630312002), we get a palindrome (23651615632).

The spelling of 20021303630 in words is "twenty billion, twenty-one million, three hundred three thousand, six hundred thirty".