20000120201111 has 16 divisors (see below), whose sum is σ = 20324682286080. Its totient is φ = 19676335916160.

The previous prime is 20000120201071. The next prime is 20000120201119. The reversal of 20000120201111 is 11110202100002.

It is a cyclic number.

It is not a de Polignac number, because 20000120201111 - 2¹⁴ = 20000120184727 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20000120201092 and 20000120201101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20000120201119) 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, 241368890 + ... + 241451736.

It is an arithmetic number, because the mean of its divisors is an integer number (1270292642880).

Almost surely, 2^{20000120201111} is an apocalyptic number.

20000120201111 is a deficient number, since it is larger than the sum of its proper divisors (324562084969).

20000120201111 is a wasteful number, since it uses less digits than its factorization.

20000120201111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87494.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 20000120201111 its reverse (11110202100002), we get a palindrome (31110322301113).

The spelling of 20000120201111 in words is "twenty trillion, one hundred twenty million, two hundred one thousand, one hundred eleven".