21112120212010 has 32 divisors (see below), whose sum is σ = 38066344580160. Its totient is φ = 8430510738048.

The previous prime is 21112120211981. The next prime is 21112120212011. The reversal of 21112120212010 is 1021202121112.

It is a super-2 number, since 2×21112120212010² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21112120212011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 78559329 + ... + 78827611.

It is an arithmetic number, because the mean of its divisors is an integer number (1189573268130).

Almost surely, 2^{21112120212010} is an apocalyptic number.

21112120212010 is a deficient number, since it is larger than the sum of its proper divisors (16954224368150).

21112120212010 is a wasteful number, since it uses less digits than its factorization.

21112120212010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 281622.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 21112120212010 its reverse (1021202121112), we get a palindrome (22133322333122).

The spelling of 21112120212010 in words is "twenty-one trillion, one hundred twelve billion, one hundred twenty million, two hundred twelve thousand, ten".