21112002202210 has 16 divisors (see below), whose sum is σ = 38428588279800. Its totient is φ = 8349915477376.

The previous prime is 21112002202169. The next prime is 21112002202219. The reversal of 21112002202210 is 1220220021112.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 5885781679969 + 15226220522241 = 2426063^2 + 3902079^2 .

It is a super-2 number, since 2×21112002202210² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21112002202219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11860674505 + ... + 11860676284.

Almost surely, 2^{21112002202210} is an apocalyptic number.

21112002202210 is a deficient number, since it is larger than the sum of its proper divisors (17316586077590).

21112002202210 is a wasteful number, since it uses less digits than its factorization.

21112002202210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23721350885.

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

Adding to 21112002202210 its reverse (1220220021112), we get a palindrome (22332222223322).

The spelling of 21112002202210 in words is "twenty-one trillion, one hundred twelve billion, two million, two hundred two thousand, two hundred ten".