121130402443 has 4 divisors (see below), whose sum is σ = 121150420128. Its totient is φ = 121110384760.

The previous prime is 121130402399. The next prime is 121130402453. The reversal of 121130402443 is 344204031121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 121130402443 - 2¹³ = 121130394251 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121130402453) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9999763 + ... + 10011868.

It is an arithmetic number, because the mean of its divisors is an integer number (30287605032).

Almost surely, 2^121130402443 is an apocalyptic number.

121130402443 is a deficient number, since it is larger than the sum of its proper divisors (20017685).

121130402443 is an equidigital number, since it uses as much as digits as its factorization.

121130402443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20017684.

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 121130402443 its reverse (344204031121), we get a palindrome (465334433564).

The spelling of 121130402443 in words is "one hundred twenty-one billion, one hundred thirty million, four hundred two thousand, four hundred forty-three".