20222112121212 has 48 divisors (see below), whose sum is σ = 47380136902560. Its totient is φ = 6712866766848.

The previous prime is 20222112121147. The next prime is 20222112121217. The reversal of 20222112121212 is 21212121122202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20222112121217) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 153538 + ... + 6361430.

It is an arithmetic number, because the mean of its divisors is an integer number (987086185470).

Almost surely, 2^{20222112121212} is an apocalyptic number.

It is an amenable number.

20222112121212 is an abundant number, since it is smaller than the sum of its proper divisors (27158024781348).

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

20222112121212 is a wasteful number, since it uses less digits than its factorization.

20222112121212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6209022 (or 6209020 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 20222112121212 its reverse (21212121122202), we get a palindrome (41434233243414).

The spelling of 20222112121212 in words is "twenty trillion, two hundred twenty-two billion, one hundred twelve million, one hundred twenty-one thousand, two hundred twelve".