1212200149 has 2 divisors, whose sum is σ = 1212200150. Its totient is φ = 1212200148.

The previous prime is 1212200123. The next prime is 1212200167. The reversal of 1212200149 is 9410022121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1110089124 + 102111025 = 33318^2 + 10105^2 .

It is a cyclic number.

It is not a de Polignac number, because 1212200149 - 2⁷ = 1212200021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1212200189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606100074 + 606100075.

It is an arithmetic number, because the mean of its divisors is an integer number (606100075).

Almost surely, 2^1212200149 is an apocalyptic number.

It is an amenable number.

1212200149 is a deficient number, since it is larger than the sum of its proper divisors (1).

1212200149 is an equidigital number, since it uses as much as digits as its factorization.

1212200149 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 1212200149 is about 34816.6648172969. The cubic root of 1212200149 is about 1066.2477089798.

The spelling of 1212200149 in words is "one billion, two hundred twelve million, two hundred thousand, one hundred forty-nine".