1440402021212 has 48 divisors (see below), whose sum is σ = 3160861304832. Its totient is φ = 557951666880.

The previous prime is 1440402021211. The next prime is 1440402021217. The reversal of 1440402021212 is 2121202040441.

It is a super-2 number, since 2×1440402021212² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1440402021211) 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, 13462988 + ... + 13569555.

It is an arithmetic number, because the mean of its divisors is an integer number (65851277184).

Almost surely, 2^{1440402021212} is an apocalyptic number.

It is an amenable number.

1440402021212 is an abundant number, since it is smaller than the sum of its proper divisors (1720459283620).

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

1440402021212 is a wasteful number, since it uses less digits than its factorization.

1440402021212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27032738 (or 27032736 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 23.

Adding to 1440402021212 its reverse (2121202040441), we get a palindrome (3561604061653).

The spelling of 1440402021212 in words is "one trillion, four hundred forty billion, four hundred two million, twenty-one thousand, two hundred twelve".