20221121121212 has 96 divisors (see below), whose sum is σ = 39591806220288. Its totient is φ = 8960112000000.

The previous prime is 20221121121211. The next prime is 20221121121239. The reversal of 20221121121212 is 21212112112202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20221121121211) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 75694637 + ... + 75961307.

It is an arithmetic number, because the mean of its divisors is an integer number (412414648128).

Almost surely, 2^{20221121121212} is an apocalyptic number.

20221121121212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

20221121121212 is a deficient number, since it is larger than the sum of its proper divisors (19370685099076).

20221121121212 is a wasteful number, since it uses less digits than its factorization.

20221121121212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267051 (or 267049 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 20221121121212 its reverse (21212112112202), we get a palindrome (41433233233414).

The spelling of 20221121121212 in words is "twenty trillion, two hundred twenty-one billion, one hundred twenty-one million, one hundred twenty-one thousand, two hundred twelve".