102130212857 has 2 divisors, whose sum is σ = 102130212858. Its totient is φ = 102130212856.

The previous prime is 102130212829. The next prime is 102130212869. The reversal of 102130212857 is 758212031201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 101916731536 + 213481321 = 319244^2 + 14611^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102130212857 is a prime.

It is a super-2 number, since 2×102130212857² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (102130212817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51065106428 + 51065106429.

It is an arithmetic number, because the mean of its divisors is an integer number (51065106429).

Almost surely, 2^102130212857 is an apocalyptic number.

It is an amenable number.

102130212857 is a deficient number, since it is larger than the sum of its proper divisors (1).

102130212857 is an equidigital number, since it uses as much as digits as its factorization.

102130212857 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6720, while the sum is 32.

The spelling of 102130212857 in words is "one hundred two billion, one hundred thirty million, two hundred twelve thousand, eight hundred fifty-seven".