20111102001102 has 128 divisors (see below), whose sum is σ = 48325977243648. Its totient is φ = 5458818758400.

The previous prime is 20111102001077. The next prime is 20111102001113. The reversal of 20111102001102 is 20110020111102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 21072133 + ... + 22005839.

It is an arithmetic number, because the mean of its divisors is an integer number (377546697216).

Almost surely, 2^{20111102001102} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20111102001102, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24162988621824).

20111102001102 is an abundant number, since it is smaller than the sum of its proper divisors (28214875242546).

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

20111102001102 is a wasteful number, since it uses less digits than its factorization.

20111102001102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 934054.

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

Adding to 20111102001102 its reverse (20110020111102), we get a palindrome (40221122112204).

It can be divided in two parts, 2011 and 1102001102, that multiplied together give a palindrome (2216124216122).

The spelling of 20111102001102 in words is "twenty trillion, one hundred eleven billion, one hundred two million, one thousand, one hundred two".