12101220149 has 2 divisors, whose sum is σ = 12101220150. Its totient is φ = 12101220148.

The previous prime is 12101220119. The next prime is 12101220223. The reversal of 12101220149 is 94102210121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12024657649 + 76562500 = 109657^2 + 8750^2 .

It is an emirp because it is prime and its reverse (94102210121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12101220149 - 2¹² = 12101216053 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12101220119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6050610074 + 6050610075.

It is an arithmetic number, because the mean of its divisors is an integer number (6050610075).

Almost surely, 2^12101220149 is an apocalyptic number.

It is an amenable number.

12101220149 is a deficient number, since it is larger than the sum of its proper divisors (1).

12101220149 is an equidigital number, since it uses as much as digits as its factorization.

12101220149 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 23.

The spelling of 12101220149 in words is "twelve billion, one hundred one million, two hundred twenty thousand, one hundred forty-nine".