20010111111102 has 32 divisors (see below), whose sum is σ = 45738630259200. Its totient is φ = 5717020423968.

The previous prime is 20010111111059. The next prime is 20010111111121. The reversal of 20010111111102 is 20111111101002.

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, 4843602 + ... + 7967477.

It is an arithmetic number, because the mean of its divisors is an integer number (1429332195600).

Almost surely, 2^{20010111111102} is an apocalyptic number.

20010111111102 is an abundant number, since it is smaller than the sum of its proper divisors (25728519148098).

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

20010111111102 is a wasteful number, since it uses less digits than its factorization.

20010111111102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12848280.

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

Adding to 20010111111102 its reverse (20111111101002), we get a palindrome (40121222212104).

It can be divided in two parts, 2001011 and 1111102, that added together give a palindrome (3112113).

The spelling of 20010111111102 in words is "twenty trillion, ten billion, one hundred eleven million, one hundred eleven thousand, one hundred two".