20101111011102 has 32 divisors (see below), whose sum is σ = 45271710434304. Its totient is φ = 5894753961600.

The previous prime is 20101111011077. The next prime is 20101111011143. The reversal of 20101111011102 is 20111011110102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4912292923 + ... + 4912297014.

It is an arithmetic number, because the mean of its divisors is an integer number (1414740951072).

Almost surely, 2^{20101111011102} is an apocalyptic number.

20101111011102 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20101111011102 is an abundant number, since it is smaller than the sum of its proper divisors (25170599423202).

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

20101111011102 is a wasteful number, since it uses less digits than its factorization.

20101111011102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9824589984.

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 20101111011102 its reverse (20111011110102), we get a palindrome (40212122121204).

The spelling of 20101111011102 in words is "twenty trillion, one hundred one billion, one hundred eleven million, eleven thousand, one hundred two".