21112122310 has 32 divisors (see below), whose sum is σ = 38174828832. Its totient is φ = 8406478080.

The previous prime is 21112122281. The next prime is 21112122319. The reversal of 21112122310 is 1322121112.

It is a super-2 number, since 2×21112122310² (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 (21112122319) 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, 2534272 + ... + 2542588.

It is an arithmetic number, because the mean of its divisors is an integer number (1192963401).

Almost surely, 2^21112122310 is an apocalyptic number.

21112122310 is a deficient number, since it is larger than the sum of its proper divisors (17062706522).

21112122310 is a wasteful number, since it uses less digits than its factorization.

21112122310 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9448.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 21112122310 its reverse (1322121112), we get a palindrome (22434243422).

The spelling of 21112122310 in words is "twenty-one billion, one hundred twelve million, one hundred twenty-two thousand, three hundred ten".