21033220010 has 16 divisors (see below), whose sum is σ = 41301595872. Its totient is φ = 7648443600.

The previous prime is 21033220009. The next prime is 21033220051. The reversal of 21033220010 is 1002233012.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 95605436 + ... + 95605655.

It is an arithmetic number, because the mean of its divisors is an integer number (2581349742).

Almost surely, 2^21033220010 is an apocalyptic number.

21033220010 is a deficient number, since it is larger than the sum of its proper divisors (20268375862).

21033220010 is a wasteful number, since it uses less digits than its factorization.

21033220010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191211109.

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 21033220010 its reverse (1002233012), we get a palindrome (22035453022).

The spelling of 21033220010 in words is "twenty-one billion, thirty-three million, two hundred twenty thousand, ten".