21000222310 has 16 divisors (see below), whose sum is σ = 38147194800. Its totient is φ = 8323023456.

The previous prime is 21000222253. The next prime is 21000222311. The reversal of 21000222310 is 1322200012.

It is a super-2 number, since 2×21000222310² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21000222311) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9632040 + ... + 9634219.

It is an arithmetic number, because the mean of its divisors is an integer number (2384199675).

Almost surely, 2^21000222310 is an apocalyptic number.

21000222310 is a deficient number, since it is larger than the sum of its proper divisors (17146972490).

21000222310 is a wasteful number, since it uses less digits than its factorization.

21000222310 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19266375.

The product of its (nonzero) digits is 48, while the sum is 13.

Adding to 21000222310 its reverse (1322200012), we get a palindrome (22322422322).

The spelling of 21000222310 in words is "twenty-one billion, two hundred twenty-two thousand, three hundred ten".