2101201111011 has 4 divisors (see below), whose sum is σ = 2801601481352. Its totient is φ = 1400800740672.

The previous prime is 2101201111007. The next prime is 2101201111039. The reversal of 2101201111011 is 1101111021012.

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

It is not a de Polignac number, because 2101201111011 - 2² = 2101201111007 is a prime.

It is a super-2 number, since 2×2101201111011² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2101201111111) 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, 350200185166 + ... + 350200185171.

It is an arithmetic number, because the mean of its divisors is an integer number (700400370338).

Almost surely, 2^{2101201111011} is an apocalyptic number.

2101201111011 is a deficient number, since it is larger than the sum of its proper divisors (700400370341).

2101201111011 is an equidigital number, since it uses as much as digits as its factorization.

2101201111011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 700400370340.

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 2101201111011 its reverse (1101111021012), we get a palindrome (3202312132023).

The spelling of 2101201111011 in words is "two trillion, one hundred one billion, two hundred one million, one hundred eleven thousand, eleven".