20010101120111 has 8 divisors (see below), whose sum is σ = 20157866554848. Its totient is φ = 19862536320000.

The previous prime is 20010101120081. The next prime is 20010101120147. The reversal of 20010101120111 is 11102110101002.

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 20010101120111 - 2⁶ = 20010101120047 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20010101120092 and 20010101120101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20010101120161) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49958450 + ... + 50357391.

It is an arithmetic number, because the mean of its divisors is an integer number (2519733319356).

Almost surely, 2^{20010101120111} is an apocalyptic number.

20010101120111 is a deficient number, since it is larger than the sum of its proper divisors (147765434737).

20010101120111 is a wasteful number, since it uses less digits than its factorization.

20010101120111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100317313.

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

Adding to 20010101120111 its reverse (11102110101002), we get a palindrome (31112211221113).

The spelling of 20010101120111 in words is "twenty trillion, ten billion, one hundred one million, one hundred twenty thousand, one hundred eleven".