221544030212000 has 96 divisors (see below), whose sum is σ = 557610113917584. Its totient is φ = 86456206848000.

The previous prime is 221544030211993. The next prime is 221544030212039. The reversal of 221544030212000 is 212030445122.

It can be written as a sum of positive squares in 8 ways, for example, as 9514436364304 + 212029593847696 = 3084548^2 + 14561236^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 675275117 + ... + 675603116.

Almost surely, 2^{221544030212000} is an apocalyptic number.

221544030212000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221544030212000 is an abundant number, since it is smaller than the sum of its proper divisors (336066083705584).

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

221544030212000 is a wasteful number, since it uses less digits than its factorization.

221544030212000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1350878299 (or 1350878281 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 26.

Adding to 221544030212000 its reverse (212030445122), we get a palindrome (221756060657122).

The spelling of 221544030212000 in words is "two hundred twenty-one trillion, five hundred forty-four billion, thirty million, two hundred twelve thousand".