102110133221 has 2 divisors, whose sum is σ = 102110133222. Its totient is φ = 102110133220.

The previous prime is 102110133199. The next prime is 102110133287. The reversal of 102110133221 is 122331011201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 73177824196 + 28932309025 = 270514^2 + 170095^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102110133221 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 102110133221.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102110133721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51055066610 + 51055066611.

It is an arithmetic number, because the mean of its divisors is an integer number (51055066611).

Almost surely, 2^102110133221 is an apocalyptic number.

It is an amenable number.

102110133221 is a deficient number, since it is larger than the sum of its proper divisors (1).

102110133221 is an equidigital number, since it uses as much as digits as its factorization.

102110133221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 102110133221 its reverse (122331011201), we get a palindrome (224441144422).

The spelling of 102110133221 in words is "one hundred two billion, one hundred ten million, one hundred thirty-three thousand, two hundred twenty-one".