121340154445 has 16 divisors (see below), whose sum is σ = 147065258880. Its totient is φ = 96101930304.

The previous prime is 121340154443. The next prime is 121340154469. The reversal of 121340154445 is 544451043121.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 121340154445 - 2¹ = 121340154443 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 121340154445.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121340154443) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 752011 + ... + 898999.

It is an arithmetic number, because the mean of its divisors is an integer number (9191578680).

Almost surely, 2^121340154445 is an apocalyptic number.

It is an amenable number.

121340154445 is a deficient number, since it is larger than the sum of its proper divisors (25725104435).

121340154445 is a wasteful number, since it uses less digits than its factorization.

121340154445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148644.

The product of its (nonzero) digits is 38400, while the sum is 34.

Adding to 121340154445 its reverse (544451043121), we get a palindrome (665791197566).

The spelling of 121340154445 in words is "one hundred twenty-one billion, three hundred forty million, one hundred fifty-four thousand, four hundred forty-five".