12011202022021 has 8 divisors (see below), whose sum is σ = 12720539122200. Its totient is φ = 11302175566848.

The previous prime is 12011202022007. The next prime is 12011202022081. The reversal of 12011202022021 is 12022020211021.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 2996496019521 + 9014706002500 = 1731039^2 + 3002450^2 .

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 12011202022021 - 2⁷ = 12011202021893 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12011202021986 and 12011202022004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12011202022081) 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, 77581636 + ... + 77736301.

It is an arithmetic number, because the mean of its divisors is an integer number (1590067390275).

Almost surely, 2^{12011202022021} is an apocalyptic number.

It is an amenable number.

12011202022021 is a deficient number, since it is larger than the sum of its proper divisors (709337100179).

12011202022021 is a wasteful number, since it uses less digits than its factorization.

12011202022021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155322503.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 12011202022021 its reverse (12022020211021), we get a palindrome (24033222233042).

The spelling of 12011202022021 in words is "twelve trillion, eleven billion, two hundred two million, twenty-two thousand, twenty-one".