121213023247 has 2 divisors, whose sum is σ = 121213023248. Its totient is φ = 121213023246.

The previous prime is 121213023221. The next prime is 121213023289. The reversal of 121213023247 is 742320312121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121213023247 - 2³⁵ = 86853284879 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121214023247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60606511623 + 60606511624.

It is an arithmetic number, because the mean of its divisors is an integer number (60606511624).

Almost surely, 2^121213023247 is an apocalyptic number.

121213023247 is a deficient number, since it is larger than the sum of its proper divisors (1).

121213023247 is an equidigital number, since it uses as much as digits as its factorization.

121213023247 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 28.

Adding to 121213023247 its reverse (742320312121), we get a palindrome (863533335368).

The spelling of 121213023247 in words is "one hundred twenty-one billion, two hundred thirteen million, twenty-three thousand, two hundred forty-seven".