2102000020011 has 80 divisors (see below), whose sum is σ = 3236948513568. Its totient is φ = 1358528371200.

The previous prime is 2102000019953. The next prime is 2102000020013. The reversal of 2102000020011 is 1100200002012.

It is not a de Polignac number, because 2102000020011 - 2¹¹ = 2102000017963 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 = 2102000019975 and 2102000020002.

It is not an unprimeable number, because it can be changed into a prime (2102000020013) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 734706721 + ... + 734709581.

Almost surely, 2^{2102000020011} is an apocalyptic number.

2102000020011 is a deficient number, since it is larger than the sum of its proper divisors (1134948493557).

2102000020011 is a wasteful number, since it uses less digits than its factorization.

2102000020011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4234 (or 4225 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 2102000020011 its reverse (1100200002012), we get a palindrome (3202200022023).

The spelling of 2102000020011 in words is "two trillion, one hundred two billion, twenty thousand, eleven".