221203344120000 has 1120 divisors, whose sum is σ = 827530681215744. Its totient is φ = 51657984000000.

The previous prime is 221203344119993. The next prime is 221203344120019. The reversal of 221203344120000 is 21443302122.

It is a happy number.

It is a super-2 number, since 2×221203344120000² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 4932817579 + ... + 4932862421.

Almost surely, 2^{221203344120000} is an apocalyptic number.

221203344120000 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 221203344120000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (413765340607872).

221203344120000 is an abundant number, since it is smaller than the sum of its proper divisors (606327337095744).

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

221203344120000 is a wasteful number, since it uses less digits than its factorization.

221203344120000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45027 (or 45002 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 221203344120000 its reverse (21443302122), we get a palindrome (221224787422122).

The spelling of 221203344120000 in words is "two hundred twenty-one trillion, two hundred three billion, three hundred forty-four million, one hundred twenty thousand".