12011010011021 has 8 divisors (see below), whose sum is σ = 13726934492544. Its totient is φ = 10295102006640.

The previous prime is 12011010010891. The next prime is 12011010011023. The reversal of 12011010011021 is 12011001011021.

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 12011010011021 - 2¹⁸ = 12011009748877 is a prime.

It is a super-2 number, since 2×12011010011021² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12011010010993 and 12011010011011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12011010011023) 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, 2515625 + ... + 5509118.

It is an arithmetic number, because the mean of its divisors is an integer number (1715866811568).

Almost surely, 2^{12011010011021} is an apocalyptic number.

It is an amenable number.

12011010011021 is a deficient number, since it is larger than the sum of its proper divisors (1715924481523).

12011010011021 is an equidigital number, since it uses as much as digits as its factorization.

12011010011021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8238571.

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

Adding to 12011010011021 its reverse (12011001011021), we get a palindrome (24022011022042).

Subtracting from 12011010011021 its reverse (12011001011021), we obtain a square (9000000 = 3000²).

The spelling of 12011010011021 in words is "twelve trillion, eleven billion, ten million, eleven thousand, twenty-one".