11122121001 has 8 divisors (see below), whose sum is σ = 14936182240. Its totient is φ = 7361403552.

The previous prime is 11122120981. The next prime is 11122121047. The reversal of 11122121001 is 10012122111.

11122121001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 11122121001 - 2⁹ = 11122120489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11122121401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13335460 + ... + 13336293.

It is an arithmetic number, because the mean of its divisors is an integer number (1867022780).

Almost surely, 2^11122121001 is an apocalyptic number.

It is an amenable number.

11122121001 is a deficient number, since it is larger than the sum of its proper divisors (3814061239).

11122121001 is a wasteful number, since it uses less digits than its factorization.

11122121001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26671895.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 11122121001 its reverse (10012122111), we get a palindrome (21134243112).

The spelling of 11122121001 in words is "eleven billion, one hundred twenty-two million, one hundred twenty-one thousand, one".