21210341200 has 60 divisors (see below), whose sum is σ = 51675630048. Its totient is φ = 8364630400.

The previous prime is 21210341197. The next prime is 21210341239. The reversal of 21210341200 is 214301212.

It is a super-4 number, since 4×21210341200⁴ (a number of 42 digits) contains 4444 as substring.

It is a Harshad number since it is a multiple of its sum of digits (16).

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, 345022 + ... + 401821.

Almost surely, 2^21210341200 is an apocalyptic number.

21210341200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21210341200 is an abundant number, since it is smaller than the sum of its proper divisors (30465288848).

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

21210341200 is a wasteful number, since it uses less digits than its factorization.

21210341200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 746932 (or 746921 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 21210341200 its reverse (214301212), we get a palindrome (21424642412).

The spelling of 21210341200 in words is "twenty-one billion, two hundred ten million, three hundred forty-one thousand, two hundred".