12021220933 has 2 divisors, whose sum is σ = 12021220934. Its totient is φ = 12021220932.

The previous prime is 12021220873. The next prime is 12021220957. The reversal of 12021220933 is 33902212021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6512167204 + 5509053729 = 80698^2 + 74223^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12021220933 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12021220898 and 12021220907.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12021220993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6010610466 + 6010610467.

It is an arithmetic number, because the mean of its divisors is an integer number (6010610467).

Almost surely, 2^12021220933 is an apocalyptic number.

It is an amenable number.

12021220933 is a deficient number, since it is larger than the sum of its proper divisors (1).

12021220933 is an equidigital number, since it uses as much as digits as its factorization.

12021220933 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 25.

Adding to 12021220933 its reverse (33902212021), we get a palindrome (45923432954).

The spelling of 12021220933 in words is "twelve billion, twenty-one million, two hundred twenty thousand, nine hundred thirty-three".