21001000301200 has 30 divisors (see below), whose sum is σ = 50454903224594. Its totient is φ = 8400400120320.

The previous prime is 21001000301119. The next prime is 21001000301201. The reversal of 21001000301200 is 210300010012.

21001000301200 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 3366241511824 + 17634758789376 = 1834732^2 + 4199376^2 .

It is a Harshad number since it is a multiple of its sum of digits (10).

It is not an unprimeable number, because it can be changed into a prime (21001000301201) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 26251249977 + ... + 26251250776.

Almost surely, 2^{21001000301200} is an apocalyptic number.

21001000301200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21001000301200 is an abundant number, since it is smaller than the sum of its proper divisors (29453902923394).

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

21001000301200 is a wasteful number, since it uses less digits than its factorization.

21001000301200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52502500771 (or 52502500760 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 10.

Adding to 21001000301200 its reverse (210300010012), we get a palindrome (21211300311212).

The spelling of 21001000301200 in words is "twenty-one trillion, one billion, three hundred one thousand, two hundred".