20001122002220 has 12 divisors (see below), whose sum is σ = 42002356204704. Its totient is φ = 8000448800880.

The previous prime is 20001122002219. The next prime is 20001122002223. The reversal of 20001122002220 is 2220022110002.

It is a junction number, because it is equal to n+sod(n) for n = 20001122002195 and 20001122002204.

It is not an unprimeable number, because it can be changed into a prime (20001122002223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 500028050036 + ... + 500028050075.

It is an arithmetic number, because the mean of its divisors is an integer number (3500196350392).

Almost surely, 2^{20001122002220} is an apocalyptic number.

20001122002220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20001122002220 is an abundant number, since it is smaller than the sum of its proper divisors (22001234202484).

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

20001122002220 is a wasteful number, since it uses less digits than its factorization.

20001122002220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1000056100120 (or 1000056100118 counting only the distinct ones).

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

Adding to 20001122002220 its reverse (2220022110002), we get a palindrome (22221144112222).

The spelling of 20001122002220 in words is "twenty trillion, one billion, one hundred twenty-two million, two thousand, two hundred twenty".