20102100012111 has 16 divisors (see below), whose sum is σ = 28864705121280. Its totient is φ = 12370458259680.

The previous prime is 20102100012101. The next prime is 20102100012157. The reversal of 20102100012111 is 11121000120102.

It is not a de Polignac number, because 20102100012111 - 2¹⁰ = 20102100011087 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20102100012101) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6811726 + ... + 9306116.

It is an arithmetic number, because the mean of its divisors is an integer number (1804044070080).

Almost surely, 2^{20102100012111} is an apocalyptic number.

20102100012111 is a deficient number, since it is larger than the sum of its proper divisors (8762605109169).

20102100012111 is a wasteful number, since it uses less digits than its factorization.

20102100012111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2701046.

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

Adding to 20102100012111 its reverse (11121000120102), we get a palindrome (31223100132213).

The spelling of 20102100012111 in words is "twenty trillion, one hundred two billion, one hundred million, twelve thousand, one hundred eleven".