121211201003149 has 2 divisors, whose sum is σ = 121211201003150. Its totient is φ = 121211201003148.

The previous prime is 121211201003129. The next prime is 121211201003161. The reversal of 121211201003149 is 941300102112121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 67421342102500 + 53789858900649 = 8211050^2 + 7334157^2 .

It is a cyclic number.

It is not a de Polignac number, because 121211201003149 - 2⁵ = 121211201003117 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121211201003129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60605600501574 + 60605600501575.

It is an arithmetic number, because the mean of its divisors is an integer number (60605600501575).

Almost surely, 2^{121211201003149} is an apocalyptic number.

It is an amenable number.

121211201003149 is a deficient number, since it is larger than the sum of its proper divisors (1).

121211201003149 is an equidigital number, since it uses as much as digits as its factorization.

121211201003149 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 28.

The spelling of 121211201003149 in words is "one hundred twenty-one trillion, two hundred eleven billion, two hundred one million, three thousand, one hundred forty-nine".