20011210102111 has 8 divisors (see below), whose sum is σ = 20701562919120. Its totient is φ = 19320878024448.

The previous prime is 20011210102109. The next prime is 20011210102127. The reversal of 20011210102111 is 11120101211002.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20011210102111 - 2¹ = 20011210102109 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20011210102091 and 20011210102100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20011210102181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3209001 + ... + 7093666.

It is an arithmetic number, because the mean of its divisors is an integer number (2587695364890).

Almost surely, 2^{20011210102111} is an apocalyptic number.

20011210102111 is a deficient number, since it is larger than the sum of its proper divisors (690352817009).

20011210102111 is a wasteful number, since it uses less digits than its factorization.

20011210102111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10369673.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 20011210102111 its reverse (11120101211002), we get a palindrome (31131311313113).

The spelling of 20011210102111 in words is "twenty trillion, eleven billion, two hundred ten million, one hundred two thousand, one hundred eleven".