20101100212220 has 48 divisors (see below), whose sum is σ = 43426330234560. Its totient is φ = 7812143978496.

The previous prime is 20101100212217. The next prime is 20101100212223. The reversal of 20101100212220 is 2221200110102.

It is an interprime number because it is at equal distance from previous prime (20101100212217) and next prime (20101100212223).

It is a junction number, because it is equal to n+sod(n) for n = 20101100212195 and 20101100212204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20101100212223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 91945685 + ... + 92164044.

It is an arithmetic number, because the mean of its divisors is an integer number (904715213220).

Almost surely, 2^{20101100212220} is an apocalyptic number.

20101100212220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20101100212220 is an abundant number, since it is smaller than the sum of its proper divisors (23325230022340).

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

20101100212220 is a wasteful number, since it uses less digits than its factorization.

20101100212220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184109894 (or 184109892 counting only the distinct ones).

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

Adding to 20101100212220 its reverse (2221200110102), we get a palindrome (22322300322322).

The spelling of 20101100212220 in words is "twenty trillion, one hundred one billion, one hundred million, two hundred twelve thousand, two hundred twenty".