20010101011101 has 32 divisors (see below), whose sum is σ = 30962427360000. Its totient is φ = 12748127540544.

The previous prime is 20010101011099. The next prime is 20010101011141. The reversal of 20010101011101 is 10111010101002.

It is not a de Polignac number, because 20010101011101 - 2¹ = 20010101011099 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20010101011141) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14407426 + ... + 15735123.

It is an arithmetic number, because the mean of its divisors is an integer number (967575855000).

Almost surely, 2^{20010101011101} is an apocalyptic number.

It is an amenable number.

20010101011101 is a deficient number, since it is larger than the sum of its proper divisors (10952326348899).

20010101011101 is a wasteful number, since it uses less digits than its factorization.

20010101011101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30143650 (or 30143644 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 9.

Adding to 20010101011101 its reverse (10111010101002), we get a palindrome (30121111112103).

The spelling of 20010101011101 in words is "twenty trillion, ten billion, one hundred one million, eleven thousand, one hundred one".