1440340022121 has 80 divisors (see below), whose sum is σ = 2632075051200. Its totient is φ = 690672044160.

The previous prime is 1440340022111. The next prime is 1440340022123. The reversal of 1440340022121 is 1212200430441.

It is not a de Polignac number, because 1440340022121 - 2²¹ = 1440337924969 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1440340022091 and 1440340022100.

It is not an unprimeable number, because it can be changed into a prime (1440340022123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 330855 + ... + 1729203.

It is an arithmetic number, because the mean of its divisors is an integer number (32900938140).

Almost surely, 2^{1440340022121} is an apocalyptic number.

1440340022121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1440340022121 is a deficient number, since it is larger than the sum of its proper divisors (1191735029079).

1440340022121 is a wasteful number, since it uses less digits than its factorization.

1440340022121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1398404 (or 1398383 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 1440340022121 its reverse (1212200430441), we get a palindrome (2652540452562).

The spelling of 1440340022121 in words is "one trillion, four hundred forty billion, three hundred forty million, twenty-two thousand, one hundred twenty-one".