21102200310 has 96 divisors (see below), whose sum is σ = 53734337280. Its totient is φ = 5293706880.

The previous prime is 21102200303. The next prime is 21102200429. The reversal of 21102200310 is 1300220112.

It is a super-2 number, since 2×21102200310² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2563381 + ... + 2571599.

It is an arithmetic number, because the mean of its divisors is an integer number (559732680).

Almost surely, 2^21102200310 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21102200310, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26867168640).

21102200310 is an abundant number, since it is smaller than the sum of its proper divisors (32632136970).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21102200310 is a wasteful number, since it uses less digits than its factorization.

21102200310 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8374 (or 8313 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

Adding to 21102200310 its reverse (1300220112), we get a palindrome (22402420422).

The spelling of 21102200310 in words is "twenty-one billion, one hundred two million, two hundred thousand, three hundred ten".