20020111020111 has 8 divisors (see below), whose sum is σ = 26694120570624. Its totient is φ = 13346421074840.

The previous prime is 20020111020109. The next prime is 20020111020137. The reversal of 20020111020111 is 11102011102002.

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 20020111020111 - 2¹ = 20020111020109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20020111020101) 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, 79755111 + ... + 80005736.

It is an arithmetic number, because the mean of its divisors is an integer number (3336765071328).

Almost surely, 2^{20020111020111} is an apocalyptic number.

20020111020111 is a deficient number, since it is larger than the sum of its proper divisors (6674009550513).

20020111020111 is a wasteful number, since it uses less digits than its factorization.

20020111020111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159802621.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 20020111020111 its reverse (11102011102002), we get a palindrome (31122122122113).

The spelling of 20020111020111 in words is "twenty trillion, twenty billion, one hundred eleven million, twenty thousand, one hundred eleven".