20121000223332 has 24 divisors (see below), whose sum is σ = 48567931574400. Its totient is φ = 6475724209696.

The previous prime is 20121000223283. The next prime is 20121000223333. The reversal of 20121000223332 is 23332200012102.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20121000223299 and 20121000223308.

It is not an unprimeable number, because it can be changed into a prime (20121000223333) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28909482732 + ... + 28909483427.

It is an arithmetic number, because the mean of its divisors is an integer number (2023663815600).

Almost surely, 2^{20121000223332} is an apocalyptic number.

It is an amenable number.

20121000223332 is an abundant number, since it is smaller than the sum of its proper divisors (28446931351068).

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

20121000223332 is a wasteful number, since it uses less digits than its factorization.

20121000223332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57818966195 (or 57818966193 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 20121000223332 its reverse (23332200012102), we get a palindrome (43453200235434).

The spelling of 20121000223332 in words is "twenty trillion, one hundred twenty-one billion, two hundred twenty-three thousand, three hundred thirty-two".