21124344310 has 32 divisors (see below), whose sum is σ = 39095167104. Its totient is φ = 8213184000.

The previous prime is 21124344259. The next prime is 21124344317. The reversal of 21124344310 is 1344342112.

It is a super-2 number, since 2×21124344310² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21124344317) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16050 + ... + 206170.

It is an arithmetic number, because the mean of its divisors is an integer number (1221723972).

Almost surely, 2^21124344310 is an apocalyptic number.

21124344310 is a deficient number, since it is larger than the sum of its proper divisors (17970822794).

21124344310 is a wasteful number, since it uses less digits than its factorization.

21124344310 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190440.

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 21124344310 its reverse (1344342112), we get a palindrome (22468686422).

The spelling of 21124344310 in words is "twenty-one billion, one hundred twenty-four million, three hundred forty-four thousand, three hundred ten".