21003214200 has 48 divisors (see below), whose sum is σ = 65109965880. Its totient is φ = 5600856960.

The previous prime is 21003214189. The next prime is 21003214229. The reversal of 21003214200 is 241230012.

It is a super-2 number, since 2×21003214200² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 21003214200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17502079 + ... + 17503278.

Almost surely, 2^21003214200 is an apocalyptic number.

21003214200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21003214200 is an abundant number, since it is smaller than the sum of its proper divisors (44106751680).

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

21003214200 is a wasteful number, since it uses less digits than its factorization.

21003214200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35005376 (or 35005367 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 21003214200 its reverse (241230012), we get a palindrome (21244444212).

The spelling of 21003214200 in words is "twenty-one billion, three million, two hundred fourteen thousand, two hundred".