21121022122022 has 32 divisors (see below), whose sum is σ = 31953591331200. Its totient is φ = 10470233088000.

The previous prime is 21121022122003. The next prime is 21121022122099. The reversal of 21121022122022 is 22022122012112.

It is a junction number, because it is equal to n+sod(n) for n = 21121022121985 and 21121022122003.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 553046504 + ... + 553084692.

It is an arithmetic number, because the mean of its divisors is an integer number (998549729100).

Almost surely, 2^{21121022122022} is an apocalyptic number.

21121022122022 is a deficient number, since it is larger than the sum of its proper divisors (10832569209178).

21121022122022 is a wasteful number, since it uses less digits than its factorization.

21121022122022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43472.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 21121022122022 its reverse (22022122012112), we get a palindrome (43143144134134).

The spelling of 21121022122022 in words is "twenty-one trillion, one hundred twenty-one billion, twenty-two million, one hundred twenty-two thousand, twenty-two".