102620101 has 2 divisors, whose sum is σ = 102620102. Its totient is φ = 102620100.

The previous prime is 102620099. The next prime is 102620107. The reversal of 102620101 is 101026201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 60435076 + 42185025 = 7774^2 + 6495^2 .

It is an emirp because it is prime and its reverse (101026201) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 102620101 - 2¹ = 102620099 is a prime.

Together with 102620099, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102620107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51310050 + 51310051.

It is an arithmetic number, because the mean of its divisors is an integer number (51310051).

Almost surely, 2^102620101 is an apocalyptic number.

It is an amenable number.

102620101 is a deficient number, since it is larger than the sum of its proper divisors (1).

102620101 is an equidigital number, since it uses as much as digits as its factorization.

102620101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 102620101 is about 10130.1579948192. The cubic root of 102620101 is about 468.1777957546.

Adding to 102620101 its reverse (101026201), we get a palindrome (203646302).

The spelling of 102620101 in words is "one hundred two million, six hundred twenty thousand, one hundred one".