221331220312044 has 24 divisors (see below), whose sum is σ = 516440638963648. Its totient is φ = 73776912737040.

The previous prime is 221331220312031. The next prime is 221331220312093. The reversal of 221331220312044 is 440213022133122.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14281702 + ... + 25428909.

Almost surely, 2^{221331220312044} is an apocalyptic number.

It is an amenable number.

221331220312044 is an abundant number, since it is smaller than the sum of its proper divisors (295109418651604).

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

221331220312044 is a wasteful number, since it uses less digits than its factorization.

221331220312044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40175085 (or 40175083 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 30.

Adding to 221331220312044 its reverse (440213022133122), we get a palindrome (661544242445166).

The spelling of 221331220312044 in words is "two hundred twenty-one trillion, three hundred thirty-one billion, two hundred twenty million, three hundred twelve thousand, forty-four".