121045435939 has 2 divisors, whose sum is σ = 121045435940. Its totient is φ = 121045435938.

The previous prime is 121045435933. The next prime is 121045435969. The reversal of 121045435939 is 939534540121.

It is a weak prime.

It is an emirp because it is prime and its reverse (939534540121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 121045435939 - 2²³ = 121037047331 is a prime.

It is not a weakly prime, because it can be changed into another prime (121045435933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60522717969 + 60522717970.

It is an arithmetic number, because the mean of its divisors is an integer number (60522717970).

Almost surely, 2^121045435939 is an apocalyptic number.

121045435939 is a deficient number, since it is larger than the sum of its proper divisors (1).

121045435939 is an equidigital number, since it uses as much as digits as its factorization.

121045435939 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 583200, while the sum is 46.

The spelling of 121045435939 in words is "one hundred twenty-one billion, forty-five million, four hundred thirty-five thousand, nine hundred thirty-nine".