20020201221020 has 96 divisors (see below), whose sum is σ = 56448567415296. Its totient is φ = 5760057888000.

The previous prime is 20020201220963. The next prime is 20020201221067. The reversal of 20020201221020 is 2012210202002.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 20020201220986 and 20020201221004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 499985006 + ... + 500025045.

It is an arithmetic number, because the mean of its divisors is an integer number (588005910576).

Almost surely, 2^{20020201221020} is an apocalyptic number.

20020201221020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20020201221020 is an abundant number, since it is smaller than the sum of its proper divisors (36428366194276).

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

20020201221020 is a wasteful number, since it uses less digits than its factorization.

20020201221020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1000010091 (or 1000010089 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 20020201221020 its reverse (2012210202002), we get a palindrome (22032411423022).

The spelling of 20020201221020 in words is "twenty trillion, twenty billion, two hundred one million, two hundred twenty-one thousand, twenty".