21122111210222 has 16 divisors (see below), whose sum is σ = 36066213608832. Its totient is φ = 9183526612920.

The previous prime is 21122111210183. The next prime is 21122111210231. The reversal of 21122111210222 is 22201211122112.

It is a super-2 number, since 2×21122111210222² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21122111210194 and 21122111210203.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20871650888 + ... + 20871651899.

It is an arithmetic number, because the mean of its divisors is an integer number (2254138350552).

Almost surely, 2^{21122111210222} is an apocalyptic number.

21122111210222 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21122111210222 is a deficient number, since it is larger than the sum of its proper divisors (14944102398610).

21122111210222 is a wasteful number, since it uses less digits than its factorization.

21122111210222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41743302823.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 21122111210222 its reverse (22201211122112), we get a palindrome (43323322332334).

The spelling of 21122111210222 in words is "twenty-one trillion, one hundred twenty-two billion, one hundred eleven million, two hundred ten thousand, two hundred twenty-two".