121897343044 has 9 divisors (see below), whose sum is σ = 213321572317. Its totient is φ = 60948322384.

The previous prime is 121897343003. The next prime is 121897343047. The reversal of 121897343044 is 440343798121.

The square root of 121897343044 is 349138.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 64028229444 + 57869113600 = 253038^2 + 240560^2 .

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121897342985 and 121897343003.

It is not an unprimeable number, because it can be changed into a prime (121897343047) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 610992 + ... + 785560.

Almost surely, 2^121897343044 is an apocalyptic number.

121897343044 is the 349138-th square number.

It is an amenable number.

121897343044 is a deficient number, since it is larger than the sum of its proper divisors (91424229273).

121897343044 is an frugal number, since it uses more digits than its factorization.

121897343044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 349142 (or 174571 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 46.

The spelling of 121897343044 in words is "one hundred twenty-one billion, eight hundred ninety-seven million, three hundred forty-three thousand, forty-four".