12021022012021 has 16 divisors (see below), whose sum is σ = 13258094313600. Its totient is φ = 10808227224000.

The previous prime is 12021022011953. The next prime is 12021022012033.

It is a happy number.

12021022012021 is nontrivially palindromic in base 10.

It is a cyclic number.

It is not a de Polignac number, because 12021022012021 - 2¹¹ = 12021022009973 is a prime.

It is a super-2 number, since 2×12021022012021² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12021022011986 and 12021022012004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12021022016021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4865826 + ... + 6907843.

It is an arithmetic number, because the mean of its divisors is an integer number (828630894600).

Almost surely, 2^{12021022012021} is an apocalyptic number.

12021022012021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12021022012021 is a deficient number, since it is larger than the sum of its proper divisors (1237072301579).

12021022012021 is a wasteful number, since it uses less digits than its factorization.

12021022012021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11774700.

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

It can be divided in two parts, 1202102 and 2012021, that added together give a palindrome (3214123).

The spelling of 12021022012021 in words is "twelve trillion, twenty-one billion, twenty-two million, twelve thousand, twenty-one".