212221000112123 has 16 divisors (see below), whose sum is σ = 216075867483840. Its totient is φ = 208403916304896.

The previous prime is 212221000112089. The next prime is 212221000112141. The reversal of 212221000112123 is 321211000122212.

It is a cyclic number.

It is not a de Polignac number, because 212221000112123 - 2⁶ = 212221000112059 is a prime.

It is a super-3 number, since 3×212221000112123³ (a number of 44 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212221000112095 and 212221000112104.

It is not an unprimeable number, because it can be changed into a prime (212221000112323) 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, 5196713 + ... + 21247301.

It is an arithmetic number, because the mean of its divisors is an integer number (13504741717740).

Almost surely, 2^{212221000112123} is an apocalyptic number.

212221000112123 is a deficient number, since it is larger than the sum of its proper divisors (3854867371717).

212221000112123 is a wasteful number, since it uses less digits than its factorization.

212221000112123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16051766.

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 212221000112123 its reverse (321211000122212), we get a palindrome (533432000234335).

The spelling of 212221000112123 in words is "two hundred twelve trillion, two hundred twenty-one billion, one hundred twelve thousand, one hundred twenty-three".