21222010021102 has 32 divisors (see below), whose sum is σ = 36237491562240. Its totient is φ = 9226782702720.

The previous prime is 21222010021099. The next prime is 21222010021109. The reversal of 21222010021102 is 20112001022212.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21222010021109) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 27757974 + ... + 28512262.

It is an arithmetic number, because the mean of its divisors is an integer number (1132421611320).

Almost surely, 2^{21222010021102} is an apocalyptic number.

21222010021102 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21222010021102 is a deficient number, since it is larger than the sum of its proper divisors (15015481541138).

21222010021102 is a wasteful number, since it uses less digits than its factorization.

21222010021102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 809928.

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

Adding to 21222010021102 its reverse (20112001022212), we get a palindrome (41334011043314).

The spelling of 21222010021102 in words is "twenty-one trillion, two hundred twenty-two billion, ten million, twenty-one thousand, one hundred two".