1333222021 has 2 divisors, whose sum is σ = 1333222022. Its totient is φ = 1333222020.

The previous prime is 1333222019. The next prime is 1333222027. The reversal of 1333222021 is 1202223331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 844193025 + 489028996 = 29055^2 + 22114^2 .

It is a cyclic number.

It is not a de Polignac number, because 1333222021 - 2¹ = 1333222019 is a prime.

Together with 1333222019, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1333222021.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1333222027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 666611010 + 666611011.

It is an arithmetic number, because the mean of its divisors is an integer number (666611011).

Almost surely, 2^1333222021 is an apocalyptic number.

It is an amenable number.

1333222021 is a deficient number, since it is larger than the sum of its proper divisors (1).

1333222021 is an equidigital number, since it uses as much as digits as its factorization.

1333222021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 1333222021 is about 36513.3129283005. The cubic root of 1333222021 is about 1100.6117866769.

Adding to 1333222021 its reverse (1202223331), we get a palindrome (2535445352).

It can be divided in two parts, 13332 and 22021, that added together give a palindrome (35353).

The spelling of 1333222021 in words is "one billion, three hundred thirty-three million, two hundred twenty-two thousand, twenty-one".