121201200000247 has 2 divisors, whose sum is σ = 121201200000248. Its totient is φ = 121201200000246.

The previous prime is 121201200000191. The next prime is 121201200000281. The reversal of 121201200000247 is 742000002102121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121201200000247 - 2⁴³ = 112405106978039 is a prime.

It is a super-2 number, since 2×121201200000247² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121201200000047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60600600000123 + 60600600000124.

It is an arithmetic number, because the mean of its divisors is an integer number (60600600000124).

Almost surely, 2^{121201200000247} is an apocalyptic number.

121201200000247 is a deficient number, since it is larger than the sum of its proper divisors (1).

121201200000247 is an equidigital number, since it uses as much as digits as its factorization.

121201200000247 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 448, while the sum is 22.

Adding to 121201200000247 its reverse (742000002102121), we get a palindrome (863201202102368).

The spelling of 121201200000247 in words is "one hundred twenty-one trillion, two hundred one billion, two hundred million, two hundred forty-seven", and thus it is an aban number.