211121201302111 has 4 divisors (see below), whose sum is σ = 211153776713824. Its totient is φ = 211088625890400.

The previous prime is 211121201302091. The next prime is 211121201302147. The reversal of 211121201302111 is 111203102121112.

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 211121201302111 - 2¹⁵ = 211121201269343 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211121201302171) 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, 16287696135 + ... + 16287709096.

It is an arithmetic number, because the mean of its divisors is an integer number (52788444178456).

Almost surely, 2^{211121201302111} is an apocalyptic number.

211121201302111 is a deficient number, since it is larger than the sum of its proper divisors (32575411713).

211121201302111 is an equidigital number, since it uses as much as digits as its factorization.

211121201302111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32575411712.

The product of its (nonzero) digits is 48, while the sum is 19.

Adding to 211121201302111 its reverse (111203102121112), we get a palindrome (322324303423223).

The spelling of 211121201302111 in words is "two hundred eleven trillion, one hundred twenty-one billion, two hundred one million, three hundred two thousand, one hundred eleven".