20021310010 has 96 divisors (see below), whose sum is σ = 40466552832. Its totient is φ = 7121387520.

The previous prime is 20021309969. The next prime is 20021310011. The reversal of 20021310010 is 1001312002.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is not an unprimeable number, because it can be changed into a prime (20021310011) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 13463487 + ... + 13464973.

It is an arithmetic number, because the mean of its divisors is an integer number (421526592).

Almost surely, 2^20021310010 is an apocalyptic number.

20021310010 is an abundant number, since it is smaller than the sum of its proper divisors (20445242822).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20021310010 is a wasteful number, since it uses less digits than its factorization.

20021310010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1808 (or 1795 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 10.

Adding to 20021310010 its reverse (1001312002), we get a palindrome (21022622012).

The spelling of 20021310010 in words is "twenty billion, twenty-one million, three hundred ten thousand, ten".