20122121333 has 2 divisors, whose sum is σ = 20122121334. Its totient is φ = 20122121332.

The previous prime is 20122121309. The next prime is 20122121347. The reversal of 20122121333 is 33312122102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16185437284 + 3936684049 = 127222^2 + 62743^2 .

It is a cyclic number.

It is not a de Polignac number, because 20122121333 - 2¹² = 20122117237 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20122181333) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10061060666 + 10061060667.

It is an arithmetic number, because the mean of its divisors is an integer number (10061060667).

Almost surely, 2^20122121333 is an apocalyptic number.

It is an amenable number.

20122121333 is a deficient number, since it is larger than the sum of its proper divisors (1).

20122121333 is an equidigital number, since it uses as much as digits as its factorization.

20122121333 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 20122121333 its reverse (33312122102), we get a palindrome (53434243435).

The spelling of 20122121333 in words is "twenty billion, one hundred twenty-two million, one hundred twenty-one thousand, three hundred thirty-three".