2251101321440 has 48 divisors (see below), whose sum is σ = 5353919726400. Its totient is φ = 894397294080.

The previous prime is 2251101321437. The next prime is 2251101321451. The reversal of 2251101321440 is 441231011522.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47188856 + ... + 47236535.

It is an arithmetic number, because the mean of its divisors is an integer number (111539994300).

Almost surely, 2^{2251101321440} is an apocalyptic number.

2251101321440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2251101321440 is an abundant number, since it is smaller than the sum of its proper divisors (3102818404960).

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

2251101321440 is a wasteful number, since it uses less digits than its factorization.

2251101321440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94425555 (or 94425547 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 26.

Adding to 2251101321440 its reverse (441231011522), we get a palindrome (2692332332962).

The spelling of 2251101321440 in words is "two trillion, two hundred fifty-one billion, one hundred one million, three hundred twenty-one thousand, four hundred forty".