20210020212220 has 24 divisors (see below), whose sum is σ = 42443176961808. Its totient is φ = 8083601510400.

The previous prime is 20210020212163. The next prime is 20210020212223. The reversal of 20210020212220 is 2221202001202.

It is a junction number, because it is equal to n+sod(n) for n = 20210020212194 and 20210020212203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20210020212223) 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, 25003141 + ... + 25798780.

It is an arithmetic number, because the mean of its divisors is an integer number (1768465706742).

Almost surely, 2^{20210020212220} is an apocalyptic number.

20210020212220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20210020212220 is an abundant number, since it is smaller than the sum of its proper divisors (22233156749588).

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

20210020212220 is a wasteful number, since it uses less digits than its factorization.

20210020212220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50821821 (or 50821819 counting only the distinct ones).

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

Adding to 20210020212220 its reverse (2221202001202), we get a palindrome (22431222213422).

The spelling of 20210020212220 in words is "twenty trillion, two hundred ten billion, twenty million, two hundred twelve thousand, two hundred twenty".