20000022121220 has 24 divisors (see below), whose sum is σ = 42001933252608. Its totient is φ = 7999649458400.

The previous prime is 20000022121213. The next prime is 20000022121229. The reversal of 20000022121220 is 2212122000002.

It is a junction number, because it is equal to n+sod(n) for n = 20000022121195 and 20000022121204.

It is not an unprimeable number, because it can be changed into a prime (20000022121229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22005326 + ... + 22896165.

It is an arithmetic number, because the mean of its divisors is an integer number (1750080552192).

Almost surely, 2^{20000022121220} is an apocalyptic number.

20000022121220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20000022121220 is an abundant number, since it is smaller than the sum of its proper divisors (22001911131388).

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

20000022121220 is a wasteful number, since it uses less digits than its factorization.

20000022121220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44923771 (or 44923769 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 20000022121220 its reverse (2212122000002), we get a palindrome (22212144121222).

The spelling of 20000022121220 in words is "twenty trillion, twenty-two million, one hundred twenty-one thousand, two hundred twenty".