133703260021 has 2 divisors, whose sum is σ = 133703260022. Its totient is φ = 133703260020.

The previous prime is 133703260013. The next prime is 133703260057. The reversal of 133703260021 is 120062307331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 105011643025 + 28691616996 = 324055^2 + 169386^2 .

It is a cyclic number.

It is not a de Polignac number, because 133703260021 - 2³ = 133703260013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133703260001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66851630010 + 66851630011.

It is an arithmetic number, because the mean of its divisors is an integer number (66851630011).

Almost surely, 2^133703260021 is an apocalyptic number.

It is an amenable number.

133703260021 is a deficient number, since it is larger than the sum of its proper divisors (1).

133703260021 is an equidigital number, since it uses as much as digits as its factorization.

133703260021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4536, while the sum is 28.

Adding to 133703260021 its reverse (120062307331), we get a palindrome (253765567352).

The spelling of 133703260021 in words is "one hundred thirty-three billion, seven hundred three million, two hundred sixty thousand, twenty-one".