20210010121220 has 24 divisors (see below), whose sum is σ = 42454338307584. Its totient is φ = 8081467466976.

The previous prime is 20210010121177. The next prime is 20210010121229. The reversal of 20210010121220 is 2212101001202.

It is a junction number, because it is equal to n+sod(n) for n = 20210010121195 and 20210010121204.

It is not an unprimeable number, because it can be changed into a prime (20210010121229) 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, 158471012 + ... + 158598491.

It is an arithmetic number, because the mean of its divisors is an integer number (1768930762816).

Almost surely, 2^{20210010121220} is an apocalyptic number.

20210010121220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20210010121220 is an abundant number, since it is smaller than the sum of its proper divisors (22244328186364).

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

20210010121220 is a wasteful number, since it uses less digits than its factorization.

20210010121220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317072699 (or 317072697 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 20210010121220 its reverse (2212101001202), we get a palindrome (22422111122422).

The spelling of 20210010121220 in words is "twenty trillion, two hundred ten billion, ten million, one hundred twenty-one thousand, two hundred twenty".