21223340210 has 64 divisors (see below), whose sum is σ = 40011439104. Its totient is φ = 8098944000.

The previous prime is 21223340207. The next prime is 21223340231. The reversal of 21223340210 is 1204332212.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3236435 + ... + 3242985.

It is an arithmetic number, because the mean of its divisors is an integer number (625178736).

Almost surely, 2^21223340210 is an apocalyptic number.

21223340210 is a deficient number, since it is larger than the sum of its proper divisors (18788098894).

21223340210 is a wasteful number, since it uses less digits than its factorization.

21223340210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6779.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 21223340210 its reverse (1204332212), we get a palindrome (22427672422).

The spelling of 21223340210 in words is "twenty-one billion, two hundred twenty-three million, three hundred forty thousand, two hundred ten".