20020221221010 has 16 divisors (see below), whose sum is σ = 48048530930496. Its totient is φ = 5338725658928.

The previous prime is 20020221221009. The next prime is 20020221221023. The reversal of 20020221221010 is 1012212202002.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 333670353654 + ... + 333670353713.

It is an arithmetic number, because the mean of its divisors is an integer number (3003033183156).

Almost surely, 2^{20020221221010} is an apocalyptic number.

20020221221010 is an abundant number, since it is smaller than the sum of its proper divisors (28028309709486).

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

20020221221010 is a wasteful number, since it uses less digits than its factorization.

20020221221010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 667340707377.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 20020221221010 its reverse (1012212202002), we get a palindrome (21032433423012).

The spelling of 20020221221010 in words is "twenty trillion, twenty billion, two hundred twenty-one million, two hundred twenty-one thousand, ten".