102102022909 has 2 divisors, whose sum is σ = 102102022910. Its totient is φ = 102102022908.

The previous prime is 102102022903. The next prime is 102102023003. The reversal of 102102022909 is 909220201201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 70771960900 + 31330062009 = 266030^2 + 177003^2 .

It is a cyclic number.

It is not a de Polignac number, because 102102022909 - 2⁵ = 102102022877 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102102022903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51051011454 + 51051011455.

It is an arithmetic number, because the mean of its divisors is an integer number (51051011455).

Almost surely, 2^102102022909 is an apocalyptic number.

It is an amenable number.

102102022909 is a deficient number, since it is larger than the sum of its proper divisors (1).

102102022909 is an equidigital number, since it uses as much as digits as its factorization.

102102022909 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 28.

The spelling of 102102022909 in words is "one hundred two billion, one hundred two million, twenty-two thousand, nine hundred nine".