20111001102102 has 32 divisors (see below), whose sum is σ = 40675649178240. Its totient is φ = 6628065554880.

The previous prime is 20111001102007. The next prime is 20111001102113. The reversal of 20111001102102 is 20120110011102.

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, 12082953 + ... + 13646235.

It is an arithmetic number, because the mean of its divisors is an integer number (1271114036820).

Almost surely, 2^{20111001102102} is an apocalyptic number.

20111001102102 is an abundant number, since it is smaller than the sum of its proper divisors (20564648076138).

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

20111001102102 is a wasteful number, since it uses less digits than its factorization.

20111001102102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1587468.

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

Adding to 20111001102102 its reverse (20120110011102), we get a palindrome (40231111113204).

The spelling of 20111001102102 in words is "twenty trillion, one hundred eleven billion, one million, one hundred two thousand, one hundred two".