133266511421 has 2 divisors, whose sum is σ = 133266511422. Its totient is φ = 133266511420.

The previous prime is 133266511337. The next prime is 133266511457. The reversal of 133266511421 is 124115662331.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 124848448921 + 8418062500 = 353339^2 + 91750^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-133266511421 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 (133266511321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66633255710 + 66633255711.

It is an arithmetic number, because the mean of its divisors is an integer number (66633255711).

Almost surely, 2^133266511421 is an apocalyptic number.

It is an amenable number.

133266511421 is a deficient number, since it is larger than the sum of its proper divisors (1).

133266511421 is an equidigital number, since it uses as much as digits as its factorization.

133266511421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25920, while the sum is 35.

The spelling of 133266511421 in words is "one hundred thirty-three billion, two hundred sixty-six million, five hundred eleven thousand, four hundred twenty-one".