11211011121 has 8 divisors (see below), whose sum is σ = 14980725664. Its totient is φ = 7457652000.

The previous prime is 11211011093. The next prime is 11211011159. The reversal of 11211011121 is 12111011211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11211011121 - 2⁶ = 11211011057 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 11211011097 and 11211011106.

It is not an unprimeable number, because it can be changed into a prime (11211011321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4087255 + ... + 4089996.

It is an arithmetic number, because the mean of its divisors is an integer number (1872590708).

Almost surely, 2^11211011121 is an apocalyptic number.

It is an amenable number.

11211011121 is a deficient number, since it is larger than the sum of its proper divisors (3769714543).

11211011121 is an equidigital number, since it uses as much as digits as its factorization.

11211011121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8177711.

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

Adding to 11211011121 its reverse (12111011211), we get a palindrome (23322022332).

The spelling of 11211011121 in words is "eleven billion, two hundred eleven million, eleven thousand, one hundred twenty-one".