121024400443 has 4 divisors (see below), whose sum is σ = 128143482840. Its totient is φ = 113905318048.

The previous prime is 121024400429. The next prime is 121024400501. The reversal of 121024400443 is 344004420121.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121024400443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121024400543) 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, 3559541173 + ... + 3559541206.

It is an arithmetic number, because the mean of its divisors is an integer number (32035870710).

Almost surely, 2^121024400443 is an apocalyptic number.

121024400443 is a deficient number, since it is larger than the sum of its proper divisors (7119082397).

121024400443 is an equidigital number, since it uses as much as digits as its factorization.

121024400443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7119082396.

The product of its (nonzero) digits is 3072, while the sum is 25.

Adding to 121024400443 its reverse (344004420121), we get a palindrome (465028820564).

The spelling of 121024400443 in words is "one hundred twenty-one billion, twenty-four million, four hundred thousand, four hundred forty-three".