21213112022122 has 16 divisors (see below), whose sum is σ = 31859142825312. Its totient is φ = 10593398330640.

The previous prime is 21213112022077. The next prime is 21213112022131. The reversal of 21213112022122 is 22122021131212.

It is a super-2 number, since 2×21213112022122² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21213112022093 and 21213112022102.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 89645053 + ... + 89881375.

It is an arithmetic number, because the mean of its divisors is an integer number (1991196426582).

Almost surely, 2^{21213112022122} is an apocalyptic number.

21213112022122 is a deficient number, since it is larger than the sum of its proper divisors (10646030803190).

21213112022122 is a wasteful number, since it uses less digits than its factorization.

21213112022122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 291813.

The product of its (nonzero) digits is 384, while the sum is 22.

Adding to 21213112022122 its reverse (22122021131212), we get a palindrome (43335133153334).

The spelling of 21213112022122 in words is "twenty-one trillion, two hundred thirteen billion, one hundred twelve million, twenty-two thousand, one hundred twenty-two".