12011155111021 has 8 divisors (see below), whose sum is σ = 13554908589600. Its totient is φ = 10542706680240.

The previous prime is 12011155110947. The next prime is 12011155111027.

12011155111021 is nontrivially palindromic in base 10.

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 12011155111021 - 2¹³ = 12011155102829 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12011155110983 and 12011155111001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12011155111027) 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, 18826261611 + ... + 18826262248.

It is an arithmetic number, because the mean of its divisors is an integer number (1694363573700).

Almost surely, 2^{12011155111021} is an apocalyptic number.

12011155111021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12011155111021 is a deficient number, since it is larger than the sum of its proper divisors (1543753478579).

12011155111021 is a wasteful number, since it uses less digits than its factorization.

12011155111021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37652523899.

The product of its (nonzero) digits is 100, while the sum is 22.

It can be divided in two parts, 1201115 and 5111021, that added together give a palindrome (6312136).

The spelling of 12011155111021 in words is "twelve trillion, eleven billion, one hundred fifty-five million, one hundred eleven thousand, twenty-one".