121445233144 has 64 divisors (see below), whose sum is σ = 250412083200. Its totient is φ = 54960402816.

The previous prime is 121445233139. The next prime is 121445233229. The reversal of 121445233144 is 441332544121.

It is a super-2 number, since 2×121445233144² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2996922 + ... + 3037174.

It is an arithmetic number, because the mean of its divisors is an integer number (3912688800).

Almost surely, 2^121445233144 is an apocalyptic number.

It is an amenable number.

121445233144 is an abundant number, since it is smaller than the sum of its proper divisors (128966850056).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121445233144 is a wasteful number, since it uses less digits than its factorization.

121445233144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41164 (or 41160 counting only the distinct ones).

The product of its digits is 46080, while the sum is 34.

Adding to 121445233144 its reverse (441332544121), we get a palindrome (562777777265).

The spelling of 121445233144 in words is "one hundred twenty-one billion, four hundred forty-five million, two hundred thirty-three thousand, one hundred forty-four".