20220433381 has 2 divisors, whose sum is σ = 20220433382. Its totient is φ = 20220433380.

The previous prime is 20220433379. The next prime is 20220433399. The reversal of 20220433381 is 18333402202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18607688100 + 1612745281 = 136410^2 + 40159^2 .

It is a cyclic number.

It is not a de Polignac number, because 20220433381 - 2¹ = 20220433379 is a prime.

It is a super-2 number, since 2×20220433381² (a number of 21 digits) contains 22 as substring.

Together with 20220433379, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20220431381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10110216690 + 10110216691.

It is an arithmetic number, because the mean of its divisors is an integer number (10110216691).

Almost surely, 2^20220433381 is an apocalyptic number.

It is an amenable number.

20220433381 is a deficient number, since it is larger than the sum of its proper divisors (1).

20220433381 is an equidigital number, since it uses as much as digits as its factorization.

20220433381 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 20220433381 its reverse (18333402202), we get a palindrome (38553835583).

The spelling of 20220433381 in words is "twenty billion, two hundred twenty million, four hundred thirty-three thousand, three hundred eighty-one".