20102220111012 has 192 divisors, whose sum is σ = 54538711879680. Its totient is φ = 5711139979776.

The previous prime is 20102220110993. The next prime is 20102220111013. The reversal of 20102220111012 is 21011102220102.

It is a junction number, because it is equal to n+sod(n) for n = 20102220110982 and 20102220111000.

It is not an unprimeable number, because it can be changed into a prime (20102220111013) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 560510193 + ... + 560546055.

It is an arithmetic number, because the mean of its divisors is an integer number (284055791040).

Almost surely, 2^{20102220111012} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20102220111012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27269355939840).

20102220111012 is an abundant number, since it is smaller than the sum of its proper divisors (34436491768668).

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

20102220111012 is a wasteful number, since it uses less digits than its factorization.

20102220111012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41322 (or 41320 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 20102220111012 its reverse (21011102220102), we get a palindrome (41113322331114).

The spelling of 20102220111012 in words is "twenty trillion, one hundred two billion, two hundred twenty million, one hundred eleven thousand, twelve".