20020001111111 has 8 divisors (see below), whose sum is σ = 21514031046000. Its totient is φ = 18561124821888.

The previous prime is 20020001111069. The next prime is 20020001111177. The reversal of 20020001111111 is 11111110002002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20020001111111 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20020001111092 and 20020001111101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20020001111711) 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, 8788410236 + ... + 8788412513.

It is an arithmetic number, because the mean of its divisors is an integer number (2689253880750).

Almost surely, 2^{20020001111111} is an apocalyptic number.

20020001111111 is a deficient number, since it is larger than the sum of its proper divisors (1494029934889).

20020001111111 is a wasteful number, since it uses less digits than its factorization.

20020001111111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17576822833.

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

Adding to 20020001111111 its reverse (11111110002002), we get a palindrome (31131111113113).

The spelling of 20020001111111 in words is "twenty trillion, twenty billion, one million, one hundred eleven thousand, one hundred eleven".