21440848302121 has 8 divisors (see below), whose sum is σ = 22957154165160. Its totient is φ = 19952884604928.

The previous prime is 21440848302103. The next prime is 21440848302151. The reversal of 21440848302121 is 12120384804412.

It can be written as a sum of positive squares in 4 ways, for example, as 2330617476496 + 19110230825625 = 1526636^2 + 4371525^2 .

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 21440848302121 - 2⁷ = 21440848301993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21440848302151) 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, 7085539896 + ... + 7085542921.

It is an arithmetic number, because the mean of its divisors is an integer number (2869644270645).

Almost surely, 2^{21440848302121} is an apocalyptic number.

It is an amenable number.

21440848302121 is a deficient number, since it is larger than the sum of its proper divisors (1516305863039).

21440848302121 is a wasteful number, since it uses less digits than its factorization.

21440848302121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14171082923.

The product of its (nonzero) digits is 98304, while the sum is 40.

The spelling of 21440848302121 in words is "twenty-one trillion, four hundred forty billion, eight hundred forty-eight million, three hundred two thousand, one hundred twenty-one".