12011111021023 has 8 divisors (see below), whose sum is σ = 12146420188800. Its totient is φ = 11875809694848.

The previous prime is 12011111021011. The next prime is 12011111021029. The reversal of 12011111021023 is 32012011111021.

It is a happy number.

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 12011111021023 - 2²¹ = 12011108923871 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12011111020988 and 12011111021006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12011111021029) 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, 1147890 + ... + 5033872.

It is an arithmetic number, because the mean of its divisors is an integer number (1518302523600).

Almost surely, 2^{12011111021023} is an apocalyptic number.

12011111021023 is a deficient number, since it is larger than the sum of its proper divisors (135309167777).

12011111021023 is an equidigital number, since it uses as much as digits as its factorization.

12011111021023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3920801.

The product of its (nonzero) digits is 24, while the sum is 16.

Adding to 12011111021023 its reverse (32012011111021), we get a palindrome (44023122132044).

It can be divided in two parts, 1201 and 1111021023, that added together give a square (1111022224 = 33332²).

The spelling of 12011111021023 in words is "twelve trillion, eleven billion, one hundred eleven million, twenty-one thousand, twenty-three".