221533732554230 has 32 divisors (see below), whose sum is σ = 400021667877600. Its totient is φ = 88333286306560.

The previous prime is 221533732554193. The next prime is 221533732554259. The reversal of 221533732554230 is 32455237335122.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 803396921 + ... + 803672619.

It is an arithmetic number, because the mean of its divisors is an integer number (12500677121175).

Almost surely, 2^{221533732554230} is an apocalyptic number.

221533732554230 is a deficient number, since it is larger than the sum of its proper divisors (178487935323370).

221533732554230 is a wasteful number, since it uses less digits than its factorization.

221533732554230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 529504.

The product of its (nonzero) digits is 4536000, while the sum is 47.

Adding to 221533732554230 its reverse (32455237335122), we get a palindrome (253988969889352).

The spelling of 221533732554230 in words is "two hundred twenty-one trillion, five hundred thirty-three billion, seven hundred thirty-two million, five hundred fifty-four thousand, two hundred thirty".