20012021002220 has 48 divisors (see below), whose sum is σ = 45321789112320. Its totient is φ = 7378632043776.

The previous prime is 20012021002217. The next prime is 20012021002243. The reversal of 20012021002220 is 2220012021002.

It is a junction number, because it is equal to n+sod(n) for n = 20012021002195 and 20012021002204.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54095852 + ... + 54464531.

It is an arithmetic number, because the mean of its divisors is an integer number (944203939840).

Almost surely, 2^{20012021002220} is an apocalyptic number.

20012021002220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20012021002220 is an abundant number, since it is smaller than the sum of its proper divisors (25309768110100).

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

20012021002220 is a wasteful number, since it uses less digits than its factorization.

20012021002220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108561114 (or 108561112 counting only the distinct ones).

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

Adding to 20012021002220 its reverse (2220012021002), we get a palindrome (22232033023222).

The spelling of 20012021002220 in words is "twenty trillion, twelve billion, twenty-one million, two thousand, two hundred twenty".