20212221122022 has 8 divisors (see below), whose sum is σ = 40424442244056. Its totient is φ = 6737407040672.

The previous prime is 20212221122021. The next prime is 20212221122087. The reversal of 20212221122022 is 22022112221202.

It is a sphenic number, since it is the product of 3 distinct primes.

20212221122022 is an admirable number.

It is a super-3 number, since 3×20212221122022³ (a number of 41 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 20212221122022.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20212221122021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1684351760163 + ... + 1684351760174.

It is an arithmetic number, because the mean of its divisors is an integer number (5053055280507).

Almost surely, 2^{20212221122022} is an apocalyptic number.

20212221122022 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

20212221122022 is a wasteful number, since it uses less digits than its factorization.

20212221122022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3368703520342.

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 20212221122022 its reverse (22022112221202), we get a palindrome (42234333343224).

The spelling of 20212221122022 in words is "twenty trillion, two hundred twelve billion, two hundred twenty-one million, one hundred twenty-two thousand, twenty-two".