11112121001 has 8 divisors (see below), whose sum is σ = 11160681504. Its totient is φ = 11063666880.

The previous prime is 11112120983. The next prime is 11112121003. The reversal of 11112121001 is 10012121111.

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 11112121001 - 2³⁰ = 10038379177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11112121003) 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, 186470 + ... + 238736.

It is an arithmetic number, because the mean of its divisors is an integer number (1395085188).

Almost surely, 2^11112121001 is an apocalyptic number.

It is an amenable number.

11112121001 is a deficient number, since it is larger than the sum of its proper divisors (48560503).

11112121001 is an equidigital number, since it uses as much as digits as its factorization.

11112121001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53191.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 11112121001 its reverse (10012121111), we get a palindrome (21124242112).

The spelling of 11112121001 in words is "eleven billion, one hundred twelve million, one hundred twenty-one thousand, one".