12011111022021 has 8 divisors (see below), whose sum is σ = 16017221879520. Its totient is φ = 8006203756272.

The previous prime is 12011111021983. The next prime is 12011111022023. The reversal of 12011111022021 is 12022011111021.

It is a happy number.

12011111022021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12011111022021 - 2⁶ = 12011111021957 is a prime.

It is a super-2 number, since 2×12011111022021² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12011111022023) 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, 300874651 + ... + 300914568.

It is an arithmetic number, because the mean of its divisors is an integer number (2002152734940).

Almost surely, 2^{12011111022021} is an apocalyptic number.

It is an amenable number.

12011111022021 is a deficient number, since it is larger than the sum of its proper divisors (4006110857499).

12011111022021 is an equidigital number, since it uses as much as digits as its factorization.

12011111022021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 601795875.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 12011111022021 its reverse (12022011111021), we get a palindrome (24033122133042).

The spelling of 12011111022021 in words is "twelve trillion, eleven billion, one hundred eleven million, twenty-two thousand, twenty-one".