12021022212011 has 4 divisors (see below), whose sum is σ = 12027530617872. Its totient is φ = 12014513806152.

The previous prime is 12021022211983. The next prime is 12021022212041. The reversal of 12021022212011 is 11021222012021.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12021022212011 - 2²² = 12021018017707 is a prime.

It is a super-4 number, since 4×12021022212011⁴ (a number of 53 digits) contains 4444 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12021022212041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3254200160 + ... + 3254203853.

It is an arithmetic number, because the mean of its divisors is an integer number (3006882654468).

Almost surely, 2^{12021022212011} is an apocalyptic number.

12021022212011 is a deficient number, since it is larger than the sum of its proper divisors (6508405861).

12021022212011 is an equidigital number, since it uses as much as digits as its factorization.

12021022212011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6508405860.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 12021022212011 its reverse (11021222012021), we get a palindrome (23042244224032).

The spelling of 12021022212011 in words is "twelve trillion, twenty-one billion, twenty-two million, two hundred twelve thousand, eleven".