102134142221 has 2 divisors, whose sum is σ = 102134142222. Its totient is φ = 102134142220.

The previous prime is 102134142181. The next prime is 102134142289. The reversal of 102134142221 is 122241431201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 101346722500 + 787419721 = 318350^2 + 28061^2 .

It is a cyclic number.

It is not a de Polignac number, because 102134142221 - 2¹⁴ = 102134125837 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 (102134102221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51067071110 + 51067071111.

It is an arithmetic number, because the mean of its divisors is an integer number (51067071111).

Almost surely, 2^102134142221 is an apocalyptic number.

It is an amenable number.

102134142221 is a deficient number, since it is larger than the sum of its proper divisors (1).

102134142221 is an equidigital number, since it uses as much as digits as its factorization.

102134142221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 102134142221 its reverse (122241431201), we get a palindrome (224375573422).

The spelling of 102134142221 in words is "one hundred two billion, one hundred thirty-four million, one hundred forty-two thousand, two hundred twenty-one".