20021012233 has 2 divisors, whose sum is σ = 20021012234. Its totient is φ = 20021012232.

The previous prime is 20021012227. The next prime is 20021012237. The reversal of 20021012233 is 33221012002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20019986064 + 1026169 = 141492^2 + 1013^2 .

It is a cyclic number.

It is not a de Polignac number, because 20021012233 - 2²⁹ = 19484141321 is a prime.

It is not a weakly prime, because it can be changed into another prime (20021012237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10010506116 + 10010506117.

It is an arithmetic number, because the mean of its divisors is an integer number (10010506117).

Almost surely, 2^20021012233 is an apocalyptic number.

It is an amenable number.

20021012233 is a deficient number, since it is larger than the sum of its proper divisors (1).

20021012233 is an equidigital number, since it uses as much as digits as its factorization.

20021012233 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 20021012233 its reverse (33221012002), we get a palindrome (53242024235).

The spelling of 20021012233 in words is "twenty billion, twenty-one million, twelve thousand, two hundred thirty-three".