203211001200 has 120 divisors (see below), whose sum is σ = 651308416768. Its totient is φ = 54159978240.

The previous prime is 203211001109. The next prime is 203211001243. The reversal of 203211001200 is 2100112302.

It is a tau number, because it is divible by the number of its divisors (120).

It is a super-2 number, since 2×203211001200² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

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, 2195049 + ... + 2285751.

Almost surely, 2^203211001200 is an apocalyptic number.

203211001200 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 203211001200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (325654208384).

203211001200 is an abundant number, since it is smaller than the sum of its proper divisors (448097415568).

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

203211001200 is a wasteful number, since it uses less digits than its factorization.

203211001200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92591 (or 92580 counting only the distinct ones).

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

Adding to 203211001200 its reverse (2100112302), we get a palindrome (205311113502).

The spelling of 203211001200 in words is "two hundred three billion, two hundred eleven million, one thousand, two hundred".