133213012103221 has 2 divisors, whose sum is σ = 133213012103222. Its totient is φ = 133213012103220.

The previous prime is 133213012103191. The next prime is 133213012103233. The reversal of 133213012103221 is 122301210312331.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 67574334970321 + 65638677132900 = 8220361^2 + 8101770^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-133213012103221 is a prime.

It is a super-2 number, since 2×133213012103221² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133213012103021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66606506051610 + 66606506051611.

It is an arithmetic number, because the mean of its divisors is an integer number (66606506051611).

Almost surely, 2^{133213012103221} is an apocalyptic number.

It is an amenable number.

133213012103221 is a deficient number, since it is larger than the sum of its proper divisors (1).

133213012103221 is an equidigital number, since it uses as much as digits as its factorization.

133213012103221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 25.

Adding to 133213012103221 its reverse (122301210312331), we get a palindrome (255514222415552).

The spelling of 133213012103221 in words is "one hundred thirty-three trillion, two hundred thirteen billion, twelve million, one hundred three thousand, two hundred twenty-one".