2100012020011 has 2 divisors, whose sum is σ = 2100012020012. Its totient is φ = 2100012020010.

The previous prime is 2100012020009. The next prime is 2100012020033. The reversal of 2100012020011 is 1100202100012.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2100012020011 - 2¹ = 2100012020009 is a prime.

Together with 2100012020009, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 2100012020011.

It is not a weakly prime, because it can be changed into another prime (2100012020311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1050006010005 + 1050006010006.

It is an arithmetic number, because the mean of its divisors is an integer number (1050006010006).

Almost surely, 2^{2100012020011} is an apocalyptic number.

2100012020011 is a deficient number, since it is larger than the sum of its proper divisors (1).

2100012020011 is an equidigital number, since it uses as much as digits as its factorization.

2100012020011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 2100012020011 its reverse (1100202100012), we get a palindrome (3200214120023).

The spelling of 2100012020011 in words is "two trillion, one hundred billion, twelve million, twenty thousand, eleven".