102012021209837 has 2 divisors, whose sum is σ = 102012021209838. Its totient is φ = 102012021209836.

The previous prime is 102012021209821. The next prime is 102012021209953. The reversal of 102012021209837 is 738902120210201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 54386922813001 + 47625098396836 = 7374749^2 + 6901094^2 .

It is a cyclic number.

It is not a de Polignac number, because 102012021209837 - 2⁴ = 102012021209821 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 102012021209837.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102012021209237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51006010604918 + 51006010604919.

It is an arithmetic number, because the mean of its divisors is an integer number (51006010604919).

Almost surely, 2^{102012021209837} is an apocalyptic number.

It is an amenable number.

102012021209837 is a deficient number, since it is larger than the sum of its proper divisors (1).

102012021209837 is an equidigital number, since it uses as much as digits as its factorization.

102012021209837 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24192, while the sum is 38.

The spelling of 102012021209837 in words is "one hundred two trillion, twelve billion, twenty-one million, two hundred nine thousand, eight hundred thirty-seven".