21022212021122 has 64 divisors (see below), whose sum is σ = 36634138168320. Its totient is φ = 8964250876224.

The previous prime is 21022212021077. The next prime is 21022212021133. The reversal of 21022212021122 is 22112021222012.

It is a super-2 number, since 2×21022212021122² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21022212021094 and 21022212021103.

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, 12978773 + ... + 14508375.

It is an arithmetic number, because the mean of its divisors is an integer number (572408408880).

Almost surely, 2^{21022212021122} is an apocalyptic number.

21022212021122 is a deficient number, since it is larger than the sum of its proper divisors (15611926147198).

21022212021122 is a wasteful number, since it uses less digits than its factorization.

21022212021122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1530327.

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

Adding to 21022212021122 its reverse (22112021222012), we get a palindrome (43134233243134).

The spelling of 21022212021122 in words is "twenty-one trillion, twenty-two billion, two hundred twelve million, twenty-one thousand, one hundred twenty-two".