1000221453200 has 120 divisors (see below), whose sum is σ = 2464166616576. Its totient is φ = 389930112000.

The previous prime is 1000221453197. The next prime is 1000221453229. The reversal of 1000221453200 is 23541220001.

It is a Harshad number since it is a multiple of its sum of digits (20).

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, 16221629 + ... + 16283171.

Almost surely, 2^{1000221453200} is an apocalyptic number.

1000221453200 is a gapful number since it is divisible by the number (10) 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 1000221453200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1232083308288).

1000221453200 is an abundant number, since it is smaller than the sum of its proper divisors (1463945163376).

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

1000221453200 is a wasteful number, since it uses less digits than its factorization.

1000221453200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62593 (or 62582 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

Adding to 1000221453200 its reverse (23541220001), we get a palindrome (1023762673201).

The spelling of 1000221453200 in words is "one trillion, two hundred twenty-one million, four hundred fifty-three thousand, two hundred".