2101122201011 has 4 divisors (see below), whose sum is σ = 2101411898352. Its totient is φ = 2100832503672.

The previous prime is 2101122200999. The next prime is 2101122201053. The reversal of 2101122201011 is 1101022211012.

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

It is a cyclic number.

It is not a de Polignac number, because 2101122201011 - 2¹⁰ = 2101122199987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2101122201511) 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, 144837791 + ... + 144852296.

It is an arithmetic number, because the mean of its divisors is an integer number (525352974588).

Almost surely, 2^{2101122201011} is an apocalyptic number.

2101122201011 is a deficient number, since it is larger than the sum of its proper divisors (289697341).

2101122201011 is an equidigital number, since it uses as much as digits as its factorization.

2101122201011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289697340.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 2101122201011 its reverse (1101022211012), we get a palindrome (3202144412023).

The spelling of 2101122201011 in words is "two trillion, one hundred one billion, one hundred twenty-two million, two hundred one thousand, eleven".