11210121111211 has 4 divisors (see below), whose sum is σ = 12229223030424. Its totient is φ = 10191019192000.

The previous prime is 11210121111097. The next prime is 11210121111227. The reversal of 11210121111211 is 11211112101211.

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 11210121111211 - 2²³ = 11210112722603 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11210121171211) 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, 509550959590 + ... + 509550959611.

It is an arithmetic number, because the mean of its divisors is an integer number (3057305757606).

Almost surely, 2^{11210121111211} is an apocalyptic number.

11210121111211 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11210121111211 is a deficient number, since it is larger than the sum of its proper divisors (1019101919213).

11210121111211 is a wasteful number, since it uses less digits than its factorization.

11210121111211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1019101919212.

The product of its (nonzero) digits is 8, while the sum is 16.

Adding to 11210121111211 its reverse (11211112101211), we get a palindrome (22421233212422).

It can be divided in two parts, 112101211 and 11211, that multiplied together give a palindrome (1256766676521).

The spelling of 11210121111211 in words is "eleven trillion, two hundred ten billion, one hundred twenty-one million, one hundred eleven thousand, two hundred eleven".