20110120110101 has 16 divisors (see below), whose sum is σ = 22993313860608. Its totient is φ = 17229508012800.

The previous prime is 20110120110079. The next prime is 20110120110137. The reversal of 20110120110101 is 10101102101102.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20110120110101 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20110120110151) 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, 143377916 + ... + 143518106.

It is an arithmetic number, because the mean of its divisors is an integer number (1437082116288).

Almost surely, 2^{20110120110101} is an apocalyptic number.

It is an amenable number.

20110120110101 is a deficient number, since it is larger than the sum of its proper divisors (2883193750507).

20110120110101 is a wasteful number, since it uses less digits than its factorization.

20110120110101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149252.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 20110120110101 its reverse (10101102101102), we get a palindrome (30211222211203).

The spelling of 20110120110101 in words is "twenty trillion, one hundred ten billion, one hundred twenty million, one hundred ten thousand, one hundred one".