11211110121 has 8 divisors (see below), whose sum is σ = 14989786560. Its totient is φ = 7453253552.

The previous prime is 11211110047. The next prime is 11211110137. The reversal of 11211110121 is 12101111211.

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

It is a cyclic number.

It is not a de Polignac number, because 11211110121 - 2⁷ = 11211109993 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11211110097 and 11211110106.

It is not an unprimeable number, because it can be changed into a prime (11211110161) 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, 5203710 + ... + 5205863.

It is an arithmetic number, because the mean of its divisors is an integer number (1873723320).

Almost surely, 2^11211110121 is an apocalyptic number.

It is an amenable number.

11211110121 is a deficient number, since it is larger than the sum of its proper divisors (3778676439).

11211110121 is a wasteful number, since it uses less digits than its factorization.

11211110121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10409935.

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

Adding to 11211110121 its reverse (12101111211), we get a palindrome (23312221332).

The spelling of 11211110121 in words is "eleven billion, two hundred eleven million, one hundred ten thousand, one hundred twenty-one".