11121002121 has 8 divisors (see below), whose sum is σ = 14855413504. Its totient is φ = 7400296080.

The previous prime is 11121002111. The next prime is 11121002147. The reversal of 11121002121 is 12120012111.

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

It is not a de Polignac number, because 11121002121 - 2⁹ = 11121001609 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11121002097 and 11121002106.

It is not an unprimeable number, because it can be changed into a prime (11121002111) 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, 3424441 + ... + 3427686.

It is an arithmetic number, because the mean of its divisors is an integer number (1856926688).

Almost surely, 2^11121002121 is an apocalyptic number.

It is an amenable number.

11121002121 is a deficient number, since it is larger than the sum of its proper divisors (3734411383).

11121002121 is an equidigital number, since it uses as much as digits as its factorization.

11121002121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6852671.

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

Adding to 11121002121 its reverse (12120012111), we get a palindrome (23241014232).

The spelling of 11121002121 in words is "eleven billion, one hundred twenty-one million, two thousand, one hundred twenty-one".