20020221210220 has 48 divisors (see below), whose sum is σ = 52416579172608. Its totient is φ = 6240068948160.

The previous prime is 20020221210181. The next prime is 20020221210229. The reversal of 20020221210220 is 2201212202002.

It is a super-2 number, since 2×20020221210220² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20020221210194 and 20020221210203.

It is not an unprimeable number, because it can be changed into a prime (20020221210229) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6500070282 + ... + 6500073361.

It is an arithmetic number, because the mean of its divisors is an integer number (1092012066096).

Almost surely, 2^{20020221210220} is an apocalyptic number.

20020221210220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20020221210220 is an abundant number, since it is smaller than the sum of its proper divisors (32396357962388).

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

20020221210220 is a wasteful number, since it uses less digits than its factorization.

20020221210220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13000143670 (or 13000143668 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 20020221210220 its reverse (2201212202002), we get a palindrome (22221433412222).

The spelling of 20020221210220 in words is "twenty trillion, twenty billion, two hundred twenty-one million, two hundred ten thousand, two hundred twenty".