21222011001022 has 16 divisors (see below), whose sum is σ = 34283250312192. Its totient is φ = 9794334241440.

The previous prime is 21222011001019. The next prime is 21222011001053. The reversal of 21222011001022 is 22010011022212.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 21222011000987 and 21222011001005.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17745933 + ... + 18904024.

It is an arithmetic number, because the mean of its divisors is an integer number (2142703144512).

Almost surely, 2^{21222011001022} is an apocalyptic number.

21222011001022 is a deficient number, since it is larger than the sum of its proper divisors (13061239311170).

21222011001022 is a wasteful number, since it uses less digits than its factorization.

21222011001022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36672243.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 21222011001022 its reverse (22010011022212), we get a palindrome (43232022023234).

The spelling of 21222011001022 in words is "twenty-one trillion, two hundred twenty-two billion, eleven million, one thousand, twenty-two".