2021222122212 has 12 divisors (see below), whose sum is σ = 4716184951856. Its totient is φ = 673740707400.

The previous prime is 2021222122103. The next prime is 2021222122247. The reversal of 2021222122212 is 2122212221202.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 84217588414 + ... + 84217588437.

Almost surely, 2^{2021222122212} is an apocalyptic number.

It is an amenable number.

2021222122212 is an abundant number, since it is smaller than the sum of its proper divisors (2694962829644).

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

2021222122212 is a wasteful number, since it uses less digits than its factorization.

2021222122212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168435176858 (or 168435176856 counting only the distinct ones).

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

Adding to 2021222122212 its reverse (2122212221202), we get a palindrome (4143434343414).

The spelling of 2021222122212 in words is "two trillion, twenty-one billion, two hundred twenty-two million, one hundred twenty-two thousand, two hundred twelve".