20102000001111 has 12 divisors (see below), whose sum is σ = 33184253970192. Its totient is φ = 11486857143456.

The previous prime is 20102000001091. The next prime is 20102000001133. The reversal of 20102000001111 is 11110000020102.

It is a happy number.

It is not a de Polignac number, because 20102000001111 - 2¹⁰ = 20102000000087 is a prime.

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

It is a junction number, because it is equal to n+sod(n) for n = 20102000001093 and 20102000001102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20102000000111) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 159539682486 + ... + 159539682611.

It is an arithmetic number, because the mean of its divisors is an integer number (2765354497516).

Almost surely, 2^{20102000001111} is an apocalyptic number.

20102000001111 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

20102000001111 is a deficient number, since it is larger than the sum of its proper divisors (13082253969081).

20102000001111 is a wasteful number, since it uses less digits than its factorization.

20102000001111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 319079365110 (or 319079365107 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 20102000001111 its reverse (11110000020102), we get a palindrome (31212000021213).

The spelling of 20102000001111 in words is "twenty trillion, one hundred two billion, one thousand, one hundred eleven".