100000212149 has 2 divisors, whose sum is σ = 100000212150. Its totient is φ = 100000212148.

The previous prime is 100000212101. The next prime is 100000212167. The reversal of 100000212149 is 941212000001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 55344915025 + 44655297124 = 235255^2 + 211318^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100000212149 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 100000212149.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100000212049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50000106074 + 50000106075.

It is an arithmetic number, because the mean of its divisors is an integer number (50000106075).

Almost surely, 2^100000212149 is an apocalyptic number.

It is an amenable number.

100000212149 is a deficient number, since it is larger than the sum of its proper divisors (1).

100000212149 is an equidigital number, since it uses as much as digits as its factorization.

100000212149 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 20.

The spelling of 100000212149 in words is "one hundred billion, two hundred twelve thousand, one hundred forty-nine".