102012220202149 has 2 divisors, whose sum is σ = 102012220202150. Its totient is φ = 102012220202148.

The previous prime is 102012220202147. The next prime is 102012220202231. The reversal of 102012220202149 is 941202022210201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 90542361390625 + 11469858811524 = 9515375^2 + 3386718^2 .

It is a cyclic number.

It is not a de Polignac number, because 102012220202149 - 2¹ = 102012220202147 is a prime.

Together with 102012220202147, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102012220202141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51006110101074 + 51006110101075.

It is an arithmetic number, because the mean of its divisors is an integer number (51006110101075).

Almost surely, 2^{102012220202149} is an apocalyptic number.

It is an amenable number.

102012220202149 is a deficient number, since it is larger than the sum of its proper divisors (1).

102012220202149 is an equidigital number, since it uses as much as digits as its factorization.

102012220202149 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304, while the sum is 28.

The spelling of 102012220202149 in words is "one hundred two trillion, twelve billion, two hundred twenty million, two hundred two thousand, one hundred forty-nine".