121873520147 has 2 divisors, whose sum is σ = 121873520148. Its totient is φ = 121873520146.

The previous prime is 121873520137. The next prime is 121873520177. The reversal of 121873520147 is 741025378121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121873520147 - 2²⁸ = 121605084691 is a prime.

It is not a weakly prime, because it can be changed into another prime (121873520137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60936760073 + 60936760074.

It is an arithmetic number, because the mean of its divisors is an integer number (60936760074).

Almost surely, 2^121873520147 is an apocalyptic number.

121873520147 is a deficient number, since it is larger than the sum of its proper divisors (1).

121873520147 is an equidigital number, since it uses as much as digits as its factorization.

121873520147 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 94080, while the sum is 41.

Adding to 121873520147 its reverse (741025378121), we get a palindrome (862898898268).

The spelling of 121873520147 in words is "one hundred twenty-one billion, eight hundred seventy-three million, five hundred twenty thousand, one hundred forty-seven".