102010203149 has 2 divisors, whose sum is σ = 102010203150. Its totient is φ = 102010203148.

The previous prime is 102010203143. The next prime is 102010203167. The reversal of 102010203149 is 941302010201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 65693278249 + 36316924900 = 256307^2 + 190570^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102010203149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102010203143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51005101574 + 51005101575.

It is an arithmetic number, because the mean of its divisors is an integer number (51005101575).

Almost surely, 2^102010203149 is an apocalyptic number.

It is an amenable number.

102010203149 is a deficient number, since it is larger than the sum of its proper divisors (1).

102010203149 is an equidigital number, since it uses as much as digits as its factorization.

102010203149 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 23.

The spelling of 102010203149 in words is "one hundred two billion, ten million, two hundred three thousand, one hundred forty-nine".