20202213420220 has 144 divisors (see below), whose sum is σ = 46314075598560. Its totient is φ = 7398455500800.

The previous prime is 20202213420209. The next prime is 20202213420251. The reversal of 20202213420220 is 2202431220202.

It is a super-2 number, since 2×20202213420220² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20202213420191 and 20202213420200.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 924956500 + ... + 924978340.

It is an arithmetic number, because the mean of its divisors is an integer number (321625524990).

Almost surely, 2^{20202213420220} is an apocalyptic number.

20202213420220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20202213420220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23157037799280).

20202213420220 is an abundant number, since it is smaller than the sum of its proper divisors (26111862178340).

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

20202213420220 is a wasteful number, since it uses less digits than its factorization.

20202213420220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24096 (or 24081 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 22.

Adding to 20202213420220 its reverse (2202431220202), we get a palindrome (22404644640422).

The spelling of 20202213420220 in words is "twenty trillion, two hundred two billion, two hundred thirteen million, four hundred twenty thousand, two hundred twenty".