121344420644 has 6 divisors (see below), whose sum is σ = 212352736134. Its totient is φ = 60672210320.

The previous prime is 121344420611. The next prime is 121344420667. The reversal of 121344420644 is 446024443121.

It can be written as a sum of positive squares in only one way, i.e., 64586123044 + 56758297600 = 254138^2 + 238240^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15168052577 + ... + 15168052584.

It is an arithmetic number, because the mean of its divisors is an integer number (35392122689).

Almost surely, 2^121344420644 is an apocalyptic number.

It is an amenable number.

121344420644 is a deficient number, since it is larger than the sum of its proper divisors (91008315490).

121344420644 is a wasteful number, since it uses less digits than its factorization.

121344420644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30336105165 (or 30336105163 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 35.

Adding to 121344420644 its reverse (446024443121), we get a palindrome (567368863765).

The spelling of 121344420644 in words is "one hundred twenty-one billion, three hundred forty-four million, four hundred twenty thousand, six hundred forty-four".