11121003021 has 8 divisors (see below), whose sum is σ = 14831144064. Its totient is φ = 7412432000.

The previous prime is 11121003017. The next prime is 11121003029. The reversal of 11121003021 is 12030012111.

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 11121003021 - 2² = 11121003017 is a prime.

It is a super-2 number, since 2×11121003021² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11121002988 and 11121003006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11121003029) 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, 375876 + ... + 404381.

It is an arithmetic number, because the mean of its divisors is an integer number (1853893008).

Almost surely, 2^11121003021 is an apocalyptic number.

It is an amenable number.

11121003021 is a deficient number, since it is larger than the sum of its proper divisors (3710141043).

11121003021 is an equidigital number, since it uses as much as digits as its factorization.

11121003021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 785011.

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

Adding to 11121003021 its reverse (12030012111), we get a palindrome (23151015132).

The spelling of 11121003021 in words is "eleven billion, one hundred twenty-one million, three thousand, twenty-one".