12021122022021 has 24 divisors (see below), whose sum is σ = 20218814403840. Its totient is φ = 6739604797536.

The previous prime is 12021122022011. The next prime is 12021122022031. The reversal of 12021122022021 is 12022022112021.

It is a happy number.

12021122022021 is a `hidden beast` number, since 1 + 202 + 1 + 1 + 220 + 220 + 21 = 666.

It is an interprime number because it is at equal distance from previous prime (12021122022011) and next prime (12021122022031).

It is not a de Polignac number, because 12021122022021 - 2¹³ = 12021122013829 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12021122021985 and 12021122022003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12021122022001) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1800104781 + ... + 1800111458.

It is an arithmetic number, because the mean of its divisors is an integer number (842450600160).

Almost surely, 2^{12021122022021} is an apocalyptic number.

It is an amenable number.

12021122022021 is a deficient number, since it is larger than the sum of its proper divisors (8197692381819).

12021122022021 is a wasteful number, since it uses less digits than its factorization.

12021122022021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3600216305 (or 3600216302 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 12021122022021 its reverse (12022022112021), we get a palindrome (24043144134042).

The spelling of 12021122022021 in words is "twelve trillion, twenty-one billion, one hundred twenty-two million, twenty-two thousand, twenty-one".