11121011021 has 8 divisors (see below), whose sum is σ = 11483616000. Its totient is φ = 10758647520.

The previous prime is 11121010939. The next prime is 11121011107. The reversal of 11121011021 is 12011012111.

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 11121011021 - 2²⁶ = 11053902157 is a prime.

It is a super-2 number, since 2×11121011021² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11121010993 and 11121011011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11121013021) 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, 35690 + ... + 153348.

It is an arithmetic number, because the mean of its divisors is an integer number (1435452000).

Almost surely, 2^11121011021 is an apocalyptic number.

It is an amenable number.

11121011021 is a deficient number, since it is larger than the sum of its proper divisors (362604979).

11121011021 is a wasteful number, since it uses less digits than its factorization.

11121011021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120739.

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

Adding to 11121011021 its reverse (12011012111), we get a palindrome (23132023132).

The spelling of 11121011021 in words is "eleven billion, one hundred twenty-one million, eleven thousand, twenty-one".