21200002310 has 16 divisors (see below), whose sum is σ = 38282710752. Its totient is φ = 8452732800.

The previous prime is 21200002309. The next prime is 21200002319. The reversal of 21200002310 is 1320000212.

It is a happy number.

It is a super-2 number, since 2×21200002310² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21200002291 and 21200002300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21200002319) 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, 3405251 + ... + 3411470.

It is an arithmetic number, because the mean of its divisors is an integer number (2392669422).

Almost surely, 2^21200002310 is an apocalyptic number.

21200002310 is a deficient number, since it is larger than the sum of its proper divisors (17082708442).

21200002310 is a wasteful number, since it uses less digits than its factorization.

21200002310 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6817039.

The product of its (nonzero) digits is 24, while the sum is 11.

Adding to 21200002310 its reverse (1320000212), we get a palindrome (22520002522).

The spelling of 21200002310 in words is "twenty-one billion, two hundred million, two thousand, three hundred ten".