121201211111047 has 2 divisors, whose sum is σ = 121201211111048. Its totient is φ = 121201211111046.

The previous prime is 121201211111021. The next prime is 121201211111107. The reversal of 121201211111047 is 740111112102121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121201211111047 - 2¹⁵ = 121201211078279 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121201211111347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60600605555523 + 60600605555524.

It is an arithmetic number, because the mean of its divisors is an integer number (60600605555524).

Almost surely, 2^{121201211111047} is an apocalyptic number.

121201211111047 is a deficient number, since it is larger than the sum of its proper divisors (1).

121201211111047 is an equidigital number, since it uses as much as digits as its factorization.

121201211111047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 224, while the sum is 25.

Adding to 121201211111047 its reverse (740111112102121), we get a palindrome (861312323213168).

The spelling of 121201211111047 in words is "one hundred twenty-one trillion, two hundred one billion, two hundred eleven million, one hundred eleven thousand, forty-seven".