21022211002210 has 24 divisors (see below), whose sum is σ = 41592705076188. Its totient is φ = 7644440364000.

The previous prime is 21022211002141. The next prime is 21022211002217. The reversal of 21022211002210 is 1220011222012.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 19642030116489 + 1380180885721 = 4431933^2 + 1174811^2 .

It is not an unprimeable number, because it can be changed into a prime (21022211002217) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8686862841 + ... + 8686865260.

Almost surely, 2^{21022211002210} is an apocalyptic number.

21022211002210 is a deficient number, since it is larger than the sum of its proper divisors (20570494073978).

21022211002210 is a wasteful number, since it uses less digits than its factorization.

21022211002210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17373728130 (or 17373728119 counting only the distinct ones).

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

Adding to 21022211002210 its reverse (1220011222012), we get a palindrome (22242222224222).

The spelling of 21022211002210 in words is "twenty-one trillion, twenty-two billion, two hundred eleven million, two thousand, two hundred ten".