221652233073101 has 2 divisors, whose sum is σ = 221652233073102. Its totient is φ = 221652233073100.

The previous prime is 221652233073097. The next prime is 221652233073253. The reversal of 221652233073101 is 101370332256122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 194857840804201 + 26794392268900 = 13959149^2 + 5176330^2 .

It is a cyclic number.

It is not a de Polignac number, because 221652233073101 - 2² = 221652233073097 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221652230073101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110826116536550 + 110826116536551.

It is an arithmetic number, because the mean of its divisors is an integer number (110826116536551).

Almost surely, 2^{221652233073101} is an apocalyptic number.

It is an amenable number.

221652233073101 is a deficient number, since it is larger than the sum of its proper divisors (1).

221652233073101 is an equidigital number, since it uses as much as digits as its factorization.

221652233073101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 90720, while the sum is 38.

The spelling of 221652233073101 in words is "two hundred twenty-one trillion, six hundred fifty-two billion, two hundred thirty-three million, seventy-three thousand, one hundred one".