133221979201 has 2 divisors, whose sum is σ = 133221979202. Its totient is φ = 133221979200.

The previous prime is 133221979171. The next prime is 133221979211. The reversal of 133221979201 is 102979122331.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 127128615601 + 6093363600 = 356551^2 + 78060^2 .

It is an emirp because it is prime and its reverse (102979122331) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 133221979201 - 2²⁹ = 132685108289 is a prime.

It is not a weakly prime, because it can be changed into another prime (133221979211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66610989600 + 66610989601.

It is an arithmetic number, because the mean of its divisors is an integer number (66610989601).

Almost surely, 2^133221979201 is an apocalyptic number.

It is an amenable number.

133221979201 is a deficient number, since it is larger than the sum of its proper divisors (1).

133221979201 is an equidigital number, since it uses as much as digits as its factorization.

133221979201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40824, while the sum is 40.

The spelling of 133221979201 in words is "one hundred thirty-three billion, two hundred twenty-one million, nine hundred seventy-nine thousand, two hundred one".