21142322214243 has 8 divisors (see below), whose sum is σ = 28195343998656. Its totient is φ = 14092090953000.

The previous prime is 21142322214187. The next prime is 21142322214259. The reversal of 21142322214243 is 34241222324112.

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

It is not a de Polignac number, because 21142322214243 - 2³⁷ = 21004883260771 is a prime.

It is a super-2 number, since 2×21142322214243² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21142322214043) 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, 697613113 + ... + 697643418.

It is an arithmetic number, because the mean of its divisors is an integer number (3524417999832).

Almost surely, 2^{21142322214243} is an apocalyptic number.

21142322214243 is a deficient number, since it is larger than the sum of its proper divisors (7053021784413).

21142322214243 is a wasteful number, since it uses less digits than its factorization.

21142322214243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1395261585.

The product of its digits is 36864, while the sum is 33.

Adding to 21142322214243 its reverse (34241222324112), we get a palindrome (55383544538355).

The spelling of 21142322214243 in words is "twenty-one trillion, one hundred forty-two billion, three hundred twenty-two million, two hundred fourteen thousand, two hundred forty-three".