121103315250644 has 12 divisors (see below), whose sum is σ = 212498980784244. Its totient is φ = 60389320740864.

The previous prime is 121103315250607. The next prime is 121103315250683. The reversal of 121103315250644 is 446052513301121.

It can be written as a sum of positive squares in 2 ways, for example, as 51521358354244 + 69581956896400 = 7177838^2 + 8341580^2 .

It is a junction number, because it is equal to n+sod(n) for n = 121103315250598 and 121103315250607.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40584219437 + ... + 40584222420.

It is an arithmetic number, because the mean of its divisors is an integer number (17708248398687).

Almost surely, 2^{121103315250644} is an apocalyptic number.

It is an amenable number.

121103315250644 is a deficient number, since it is larger than the sum of its proper divisors (91395665533600).

121103315250644 is a wasteful number, since it uses less digits than its factorization.

121103315250644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81168442234 (or 81168442232 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 38.

Adding to 121103315250644 its reverse (446052513301121), we get a palindrome (567155828551765).

The spelling of 121103315250644 in words is "one hundred twenty-one trillion, one hundred three billion, three hundred fifteen million, two hundred fifty thousand, six hundred forty-four".