2101202120011 has 4 divisors (see below), whose sum is σ = 2101240339192. Its totient is φ = 2101163900832.

The previous prime is 2101202119987. The next prime is 2101202120029. The reversal of 2101202120011 is 1100212021012.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2101202120011 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2101202119973 and 2101202120000.

It is not an unprimeable number, because it can be changed into a prime (2101202129011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19027005 + ... + 19137118.

It is an arithmetic number, because the mean of its divisors is an integer number (525310084798).

Almost surely, 2^{2101202120011} is an apocalyptic number.

2101202120011 is a deficient number, since it is larger than the sum of its proper divisors (38219181).

2101202120011 is an equidigital number, since it uses as much as digits as its factorization.

2101202120011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38219180.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 2101202120011 its reverse (1100212021012), we get a palindrome (3201414141023).

The spelling of 2101202120011 in words is "two trillion, one hundred one billion, two hundred two million, one hundred twenty thousand, eleven".