21124231213310 has 16 divisors (see below), whose sum is σ = 38025656741376. Its totient is φ = 8449239028128.

The previous prime is 21124231213307. The next prime is 21124231213361. The reversal of 21124231213310 is 1331213242112.

It is a super-2 number, since 2×21124231213310² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 21124231213310.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56486462 + ... + 56859201.

It is an arithmetic number, because the mean of its divisors is an integer number (2376603546336).

Almost surely, 2^{21124231213310} is an apocalyptic number.

21124231213310 is a deficient number, since it is larger than the sum of its proper divisors (16901425528066).

21124231213310 is a wasteful number, since it uses less digits than its factorization.

21124231213310 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113364307.

The product of its (nonzero) digits is 1728, while the sum is 26.

Adding to 21124231213310 its reverse (1331213242112), we get a palindrome (22455444455422).

The spelling of 21124231213310 in words is "twenty-one trillion, one hundred twenty-four billion, two hundred thirty-one million, two hundred thirteen thousand, three hundred ten".