21201341200 has 120 divisors (see below), whose sum is σ = 55052045888. Its totient is φ = 7799984640.

The previous prime is 21201341191. The next prime is 21201341267. The reversal of 21201341200 is 214310212.

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

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1464397 + ... + 1478803.

Almost surely, 2^21201341200 is an apocalyptic number.

21201341200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21201341200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27526022944).

21201341200 is an abundant number, since it is smaller than the sum of its proper divisors (33850704688).

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

21201341200 is a wasteful number, since it uses less digits than its factorization.

21201341200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14721 (or 14710 counting only the distinct ones).

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

Adding to 21201341200 its reverse (214310212), we get a palindrome (21415651412).

The spelling of 21201341200 in words is "twenty-one billion, two hundred one million, three hundred forty-one thousand, two hundred".