20020020121220 has 24 divisors (see below), whose sum is σ = 48048048291264. Its totient is φ = 6864006898656.

The previous prime is 20020020121219. The next prime is 20020020121223. The reversal of 20020020121220 is 2212102002002.

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 = 20020020121195 and 20020020121204.

It is not an unprimeable number, because it can be changed into a prime (20020020121223) 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, 71500071722 + ... + 71500072001.

It is an arithmetic number, because the mean of its divisors is an integer number (2002002012136).

Almost surely, 2^{20020020121220} is an apocalyptic number.

20020020121220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20020020121220 is an abundant number, since it is smaller than the sum of its proper divisors (28028028170044).

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

20020020121220 is a wasteful number, since it uses less digits than its factorization.

20020020121220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143000143739 (or 143000143737 counting only the distinct ones).

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

Adding to 20020020121220 its reverse (2212102002002), we get a palindrome (22232122123222).

The spelling of 20020020121220 in words is "twenty trillion, twenty billion, twenty million, one hundred twenty-one thousand, two hundred twenty".