21243413010 has 64 divisors (see below), whose sum is σ = 54011878272. Its totient is φ = 5328854016.

The previous prime is 21243412999. The next prime is 21243413029. The reversal of 21243413010 is 1031434212.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1052332 + ... + 1072328.

It is an arithmetic number, because the mean of its divisors is an integer number (843935598).

Almost surely, 2^21243413010 is an apocalyptic number.

21243413010 is an abundant number, since it is smaller than the sum of its proper divisors (32768465262).

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

21243413010 is a wasteful number, since it uses less digits than its factorization.

21243413010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22107.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 21243413010 its reverse (1031434212), we get a palindrome (22274847222).

The spelling of 21243413010 in words is "twenty-one billion, two hundred forty-three million, four hundred thirteen thousand, ten".