121444672 has 14 divisors (see below), whose sum is σ = 240991898. Its totient is φ = 60722304.

The previous prime is 121444657. The next prime is 121444699. The reversal of 121444672 is 276444121.

It can be written as a sum of positive squares in only one way, i.e., 121352256 + 92416 = 11016^2 + 304^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 948723 + ... + 948850.

It is an arithmetic number, because the mean of its divisors is an integer number (17213707).

Almost surely, 2^121444672 is an apocalyptic number.

It is an amenable number.

121444672 is a deficient number, since it is larger than the sum of its proper divisors (119547226).

121444672 is an equidigital number, since it uses as much as digits as its factorization.

121444672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1897585 (or 1897575 counting only the distinct ones).

The product of its digits is 10752, while the sum is 31.

The square root of 121444672 is about 11020.1938276965. The cubic root of 121444672 is about 495.2138952484.

Adding to 121444672 its reverse (276444121), we get a palindrome (397888793).

The spelling of 121444672 in words is "one hundred twenty-one million, four hundred forty-four thousand, six hundred seventy-two".