21143344240122 has 32 divisors (see below), whose sum is σ = 45716707253952. Its totient is φ = 6480330584064.

The previous prime is 21143344240093. The next prime is 21143344240133. The reversal of 21143344240122 is 22104244334112.

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, 527350608 + ... + 527390699.

It is an arithmetic number, because the mean of its divisors is an integer number (1428647101686).

Almost surely, 2^{21143344240122} is an apocalyptic number.

21143344240122 is an abundant number, since it is smaller than the sum of its proper divisors (24573363013830).

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

21143344240122 is a wasteful number, since it uses less digits than its factorization.

21143344240122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1054741582.

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

Adding to 21143344240122 its reverse (22104244334112), we get a palindrome (43247588574234).

The spelling of 21143344240122 in words is "twenty-one trillion, one hundred forty-three billion, three hundred forty-four million, two hundred forty thousand, one hundred twenty-two".