21040079150221 has 8 divisors (see below), whose sum is σ = 21160727561088. Its totient is φ = 20919746988000.

The previous prime is 21040079150183. The next prime is 21040079150327. The reversal of 21040079150221 is 12205197004012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21040079150221 - 2¹⁷ = 21040079019149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21040079180221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78928720 + ... + 79194841.

It is an arithmetic number, because the mean of its divisors is an integer number (2645090945136).

Almost surely, 2^{21040079150221} is an apocalyptic number.

It is an amenable number.

21040079150221 is a deficient number, since it is larger than the sum of its proper divisors (120648410867).

21040079150221 is a wasteful number, since it uses less digits than its factorization.

21040079150221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158124323.

The product of its (nonzero) digits is 10080, while the sum is 34.

The spelling of 21040079150221 in words is "twenty-one trillion, forty billion, seventy-nine million, one hundred fifty thousand, two hundred twenty-one".