20110101010111 has 16 divisors (see below), whose sum is σ = 23902992475648. Its totient is φ = 16560357660000.

The previous prime is 20110101010073. The next prime is 20110101010147. The reversal of 20110101010111 is 11101010101102.

It is not a de Polignac number, because 20110101010111 - 2¹⁷ = 20110100879039 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20110101010151) 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, 547612515 + ... + 547649236.

It is an arithmetic number, because the mean of its divisors is an integer number (1493937029728).

Almost surely, 2^{20110101010111} is an apocalyptic number.

20110101010111 is a deficient number, since it is larger than the sum of its proper divisors (3792891465537).

20110101010111 is a wasteful number, since it uses less digits than its factorization.

20110101010111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1095261862.

The product of its (nonzero) digits is 2, while the sum is 10.

Adding to 20110101010111 its reverse (11101010101102), we get a palindrome (31211111111213).

Subtracting from 20110101010111 its reverse (11101010101102), we obtain a palindrome (9009090909009).

The spelling of 20110101010111 in words is "twenty trillion, one hundred ten billion, one hundred one million, ten thousand, one hundred eleven".