21212011011122 has 64 divisors (see below), whose sum is σ = 33226245360000. Its totient is φ = 10147995906048.

The previous prime is 21212011011089. The next prime is 21212011011151. The reversal of 21212011011122 is 22111011021212.

It is a super-2 number, since 2×21212011011122² (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 21212011011122.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3741752504 + ... + 3741758172.

It is an arithmetic number, because the mean of its divisors is an integer number (519160083750).

Almost surely, 2^{21212011011122} is an apocalyptic number.

21212011011122 is a deficient number, since it is larger than the sum of its proper divisors (12014234348878).

21212011011122 is a wasteful number, since it uses less digits than its factorization.

21212011011122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8235.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 21212011011122 its reverse (22111011021212), we get a palindrome (43323022032334).

The spelling of 21212011011122 in words is "twenty-one trillion, two hundred twelve billion, eleven million, eleven thousand, one hundred twenty-two".