2154224133240 has 64 divisors (see below), whose sum is σ = 6462800611200. Its totient is φ = 574448372352.

The previous prime is 2154224133221. The next prime is 2154224133283. The reversal of 2154224133240 is 423314224512.

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 15 ways as a sum of consecutive naturals, for example, 7145799 + ... + 7441161.

It is an arithmetic number, because the mean of its divisors is an integer number (100981259550).

Almost surely, 2^{2154224133240} is an apocalyptic number.

2154224133240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2154224133240 is an abundant number, since it is smaller than the sum of its proper divisors (4308576477960).

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

2154224133240 is a wasteful number, since it uses less digits than its factorization.

2154224133240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 356156 (or 356152 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 33.

Adding to 2154224133240 its reverse (423314224512), we get a palindrome (2577538357752).

The spelling of 2154224133240 in words is "two trillion, one hundred fifty-four billion, two hundred twenty-four million, one hundred thirty-three thousand, two hundred forty".