21222002101011 has 16 divisors (see below), whose sum is σ = 28485469303200. Its totient is φ = 14053580287488.

The previous prime is 21222002100997. The next prime is 21222002101021. The reversal of 21222002101011 is 11010120022212.

It is not a de Polignac number, because 21222002101011 - 2¹⁸ = 21222001838867 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21222002101021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38744956 + ... + 39288873.

It is an arithmetic number, because the mean of its divisors is an integer number (1780341831450).

Almost surely, 2^{21222002101011} is an apocalyptic number.

21222002101011 is a deficient number, since it is larger than the sum of its proper divisors (7263467202189).

21222002101011 is a wasteful number, since it uses less digits than its factorization.

21222002101011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78034438.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 21222002101011 its reverse (11010120022212), we get a palindrome (32232122123223).

The spelling of 21222002101011 in words is "twenty-one trillion, two hundred twenty-two billion, two million, one hundred one thousand, eleven".