20000121221120 has 52 divisors (see below), whose sum is σ = 47994431569320. Its totient is φ = 8000048480256.

The previous prime is 20000121221071. The next prime is 20000121221191. The reversal of 20000121221120 is 2112212100002.

It is a super-4 number, since 4×20000121221120⁴ (a number of 54 digits) contains 4444 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20000121221095 and 20000121221104.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 488263730 + ... + 488304689.

Almost surely, 2^{20000121221120} is an apocalyptic number.

20000121221120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20000121221120 is an abundant number, since it is smaller than the sum of its proper divisors (27994310348200).

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

20000121221120 is an frugal number, since it uses more digits than its factorization.

20000121221120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 976568448 (or 976568426 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 20000121221120 its reverse (2112212100002), we get a palindrome (22112333321122).

The spelling of 20000121221120 in words is "twenty trillion, one hundred twenty-one million, two hundred twenty-one thousand, one hundred twenty".