21350445151224 has 128 divisors (see below), whose sum is σ = 62834355118080. Its totient is φ = 5918462899200.

The previous prime is 21350445151207. The next prime is 21350445151229. The reversal of 21350445151224 is 42215154405312.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21350445151229) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7315864 + ... + 9809319.

It is an arithmetic number, because the mean of its divisors is an integer number (490893399360).

Almost surely, 2^{21350445151224} is an apocalyptic number.

21350445151224 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

21350445151224 is an abundant number, since it is smaller than the sum of its proper divisors (41483909966856).

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

21350445151224 is a wasteful number, since it uses less digits than its factorization.

21350445151224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17125421 (or 17125417 counting only the distinct ones).

The product of its (nonzero) digits is 192000, while the sum is 39.

Adding to 21350445151224 its reverse (42215154405312), we get a palindrome (63565599556536).

The spelling of 21350445151224 in words is "twenty-one trillion, three hundred fifty billion, four hundred forty-five million, one hundred fifty-one thousand, two hundred twenty-four".