102102213232501 has 2 divisors, whose sum is σ = 102102213232502. Its totient is φ = 102102213232500.

The previous prime is 102102213232499. The next prime is 102102213232511. The reversal of 102102213232501 is 105232312201201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 70376143124401 + 31726070108100 = 8389049^2 + 5632590^2 .

It is a cyclic number.

It is not a de Polignac number, because 102102213232501 - 2¹ = 102102213232499 is a prime.

Together with 102102213232499, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102102213232511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51051106616250 + 51051106616251.

It is an arithmetic number, because the mean of its divisors is an integer number (51051106616251).

Almost surely, 2^{102102213232501} is an apocalyptic number.

It is an amenable number.

102102213232501 is a deficient number, since it is larger than the sum of its proper divisors (1).

102102213232501 is an equidigital number, since it uses as much as digits as its factorization.

102102213232501 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1440, while the sum is 25.

Adding to 102102213232501 its reverse (105232312201201), we get a palindrome (207334525433702).

The spelling of 102102213232501 in words is "one hundred two trillion, one hundred two billion, two hundred thirteen million, two hundred thirty-two thousand, five hundred one".