121445244838 has 16 divisors (see below), whose sum is σ = 182575592784. Its totient is φ = 60586789120.

The previous prime is 121445244821. The next prime is 121445244839. The reversal of 121445244838 is 838442544121.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121445244839) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3595806 + ... + 3629422.

It is an arithmetic number, because the mean of its divisors is an integer number (11410974549).

Almost surely, 2^121445244838 is an apocalyptic number.

121445244838 is a deficient number, since it is larger than the sum of its proper divisors (61130347946).

121445244838 is a wasteful number, since it uses less digits than its factorization.

121445244838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37607.

The product of its digits is 983040, while the sum is 46.

Adding to 121445244838 its reverse (838442544121), we get a palindrome (959887788959).

The spelling of 121445244838 in words is "one hundred twenty-one billion, four hundred forty-five million, two hundred forty-four thousand, eight hundred thirty-eight".