12011101021 has 8 divisors (see below), whose sum is σ = 12049804800. Its totient is φ = 11972449680.

The previous prime is 12011101019. The next prime is 12011101031. The reversal of 12011101021 is 12010111021.

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 12011101021 - 2¹ = 12011101019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12011100989 and 12011101007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12011101031) 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, 474516 + ... + 499186.

It is an arithmetic number, because the mean of its divisors is an integer number (1506225600).

Almost surely, 2^12011101021 is an apocalyptic number.

It is an amenable number.

12011101021 is a deficient number, since it is larger than the sum of its proper divisors (38703779).

12011101021 is a wasteful number, since it uses less digits than its factorization.

12011101021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26219.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 12011101021 its reverse (12010111021), we get a palindrome (24021212042).

The spelling of 12011101021 in words is "twelve billion, eleven million, one hundred one thousand, twenty-one".