20221121000020 has 24 divisors (see below), whose sum is σ = 42464912611968. Its totient is φ = 8088342016800.

The previous prime is 20221120999997. The next prime is 20221121000029. The reversal of 20221121000020 is 2000012112202.

It is a happy number.

It is a super-4 number, since 4×20221121000020⁴ (a number of 54 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20221121000029) 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, 5081296 + ... + 8140135.

It is an arithmetic number, because the mean of its divisors is an integer number (1769371358832).

Almost surely, 2^{20221121000020} is an apocalyptic number.

20221121000020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20221121000020 is an abundant number, since it is smaller than the sum of its proper divisors (22243791611948).

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

20221121000020 is a wasteful number, since it uses less digits than its factorization.

20221121000020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13297911 (or 13297909 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 20221121000020 its reverse (2000012112202), we get a palindrome (22221133112222).

The spelling of 20221121000020 in words is "twenty trillion, two hundred twenty-one billion, one hundred twenty-one million, twenty", and thus it is an aban number.