121011444 has 18 divisors (see below), whose sum is σ = 305890130. Its totient is φ = 40337136.

The previous prime is 121011413. The next prime is 121011463. The reversal of 121011444 is 444110121.

121011444 is a `hidden beast` number, since 1 + 210 + 11 + 444 = 666.

It can be written as a sum of positive squares in only one way, i.e., 100761444 + 20250000 = 10038^2 + 4500^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1680679 + ... + 1680750.

Almost surely, 2^121011444 is an apocalyptic number.

It is an amenable number.

121011444 is an abundant number, since it is smaller than the sum of its proper divisors (184878686).

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

121011444 is a wasteful number, since it uses less digits than its factorization.

121011444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3361439 (or 3361434 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

The square root of 121011444 is about 11000.5201695193. The cubic root of 121011444 is about 494.6243369531.

Adding to 121011444 its reverse (444110121), we get a palindrome (565121565).

The spelling of 121011444 in words is "one hundred twenty-one million, eleven thousand, four hundred forty-four".