21214331251040 has 96 divisors (see below), whose sum is σ = 51343419002400. Its totient is φ = 8278416691200.

The previous prime is 21214331251021. The next prime is 21214331251129. The reversal of 21214331251040 is 4015213341212.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 21214331250994 and 21214331251012.

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, 202973195 + ... + 203077685.

It is an arithmetic number, because the mean of its divisors is an integer number (534827281275).

Almost surely, 2^{21214331251040} is an apocalyptic number.

21214331251040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21214331251040 is an abundant number, since it is smaller than the sum of its proper divisors (30129087751360).

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

21214331251040 is a wasteful number, since it uses less digits than its factorization.

21214331251040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135496 (or 135488 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 29.

Adding to 21214331251040 its reverse (4015213341212), we get a palindrome (25229544592252).

The spelling of 21214331251040 in words is "twenty-one trillion, two hundred fourteen billion, three hundred thirty-one million, two hundred fifty-one thousand, forty".