2101022111211 has 4 divisors (see below), whose sum is σ = 2801362814952. Its totient is φ = 1400681407472.

The previous prime is 2101022111179. The next prime is 2101022111239. The reversal of 2101022111211 is 1121112201012.

It is a happy number.

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 2101022111211 - 2⁵ = 2101022111179 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2106022111211) 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, 350170351866 + ... + 350170351871.

It is an arithmetic number, because the mean of its divisors is an integer number (700340703738).

Almost surely, 2^{2101022111211} is an apocalyptic number.

2101022111211 is a deficient number, since it is larger than the sum of its proper divisors (700340703741).

2101022111211 is an equidigital number, since it uses as much as digits as its factorization.

2101022111211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 700340703740.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 2101022111211 its reverse (1121112201012), we get a palindrome (3222134312223).

The spelling of 2101022111211 in words is "two trillion, one hundred one billion, twenty-two million, one hundred eleven thousand, two hundred eleven".