21553345222141 has 8 divisors (see below), whose sum is σ = 22700823441120. Its totient is φ = 20407176166032.

The previous prime is 21553345222109. The next prime is 21553345222177. The reversal of 21553345222141 is 14122254335512.

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 21553345222141 - 2⁵ = 21553345222109 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21553345222094 and 21553345222103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21553345222181) 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, 327256915 + ... + 327322768.

It is an arithmetic number, because the mean of its divisors is an integer number (2837602930140).

Almost surely, 2^{21553345222141} is an apocalyptic number.

It is an amenable number.

21553345222141 is a deficient number, since it is larger than the sum of its proper divisors (1147478218979).

21553345222141 is a wasteful number, since it uses less digits than its factorization.

21553345222141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 654581435.

The product of its digits is 288000, while the sum is 40.

Adding to 21553345222141 its reverse (14122254335512), we get a palindrome (35675599557653).

The spelling of 21553345222141 in words is "twenty-one trillion, five hundred fifty-three billion, three hundred forty-five million, two hundred twenty-two thousand, one hundred forty-one".