12211010110020 has 24 divisors (see below), whose sum is σ = 34190828308224. Its totient is φ = 3256269362656.

The previous prime is 12211010109931. The next prime is 12211010110021. The reversal of 12211010110020 is 2001101011221.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 12211010109978 and 12211010110005.

It is not an unprimeable number, because it can be changed into a prime (12211010110021) 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, 101758417524 + ... + 101758417643.

It is an arithmetic number, because the mean of its divisors is an integer number (1424617846176).

Almost surely, 2^{12211010110020} is an apocalyptic number.

12211010110020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12211010110020 is an abundant number, since it is smaller than the sum of its proper divisors (21979818198204).

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

12211010110020 is a wasteful number, since it uses less digits than its factorization.

12211010110020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203516835179 (or 203516835177 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 12211010110020 its reverse (2001101011221), we get a palindrome (14212111121241).

The spelling of 12211010110020 in words is "twelve trillion, two hundred eleven billion, ten million, one hundred ten thousand, twenty".