20111102220102 has 16 divisors (see below), whose sum is σ = 41309291047152. Its totient is φ = 6522519638880.

The previous prime is 20111102220043. The next prime is 20111102220217. The reversal of 20111102220102 is 20102220111102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45295275049 + ... + 45295275492.

It is an arithmetic number, because the mean of its divisors is an integer number (2581830690447).

Almost surely, 2^{20111102220102} is an apocalyptic number.

20111102220102 is an abundant number, since it is smaller than the sum of its proper divisors (21198188827050).

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

20111102220102 is a wasteful number, since it uses less digits than its factorization.

20111102220102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90590550583.

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

Adding to 20111102220102 its reverse (20102220111102), we get a palindrome (40213322331204).

The spelling of 20111102220102 in words is "twenty trillion, one hundred eleven billion, one hundred two million, two hundred twenty thousand, one hundred two".