20222121220212 has 24 divisors (see below), whose sum is σ = 47185045854912. Its totient is φ = 6740693310400.

The previous prime is 20222121220159. The next prime is 20222121220237. The reversal of 20222121220212 is 21202212122202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5672512 + ... + 8521832.

It is an arithmetic number, because the mean of its divisors is an integer number (1966043577288).

Almost surely, 2^{20222121220212} is an apocalyptic number.

It is an amenable number.

20222121220212 is an abundant number, since it is smaller than the sum of its proper divisors (26962924634700).

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

20222121220212 is a wasteful number, since it uses less digits than its factorization.

20222121220212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3440759 (or 3440757 counting only the distinct ones).

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

Adding to 20222121220212 its reverse (21202212122202), we get a palindrome (41424333342414).

The spelling of 20222121220212 in words is "twenty trillion, two hundred twenty-two billion, one hundred twenty-one million, two hundred twenty thousand, two hundred twelve".