21343423421110 has 32 divisors (see below), whose sum is σ = 43909702125120. Its totient is φ = 7317206658432.

The previous prime is 21343423421081. The next prime is 21343423421147. The reversal of 21343423421110 is 1112432434312.

It is a happy number.

It is a congruent number.

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, 10260465 + ... + 12164044.

It is an arithmetic number, because the mean of its divisors is an integer number (1372178191410).

Almost surely, 2^{21343423421110} is an apocalyptic number.

21343423421110 is an abundant number, since it is smaller than the sum of its proper divisors (22566278704010).

21343423421110 is a wasteful number, since it uses less digits than its factorization.

21343423421110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22438120.

The product of its (nonzero) digits is 13824, while the sum is 31.

Adding to 21343423421110 its reverse (1112432434312), we get a palindrome (22455855855422).

The spelling of 21343423421110 in words is "twenty-one trillion, three hundred forty-three billion, four hundred twenty-three million, four hundred twenty-one thousand, one hundred ten".