221533607057752 has 64 divisors (see below), whose sum is σ = 482665043427840. Its totient is φ = 94206228134400.

The previous prime is 221533607057683. The next prime is 221533607057767. The reversal of 221533607057752 is 257750706335122.

It is a junction number, because it is equal to n+sod(n) for n = 221533607057693 and 221533607057702.

It is a congruent number.

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, 443115324 + ... + 443614987.

It is an arithmetic number, because the mean of its divisors is an integer number (7541641303560).

Almost surely, 2^{221533607057752} is an apocalyptic number.

221533607057752 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

221533607057752 is an abundant number, since it is smaller than the sum of its proper divisors (261131436370088).

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

221533607057752 is a wasteful number, since it uses less digits than its factorization.

221533607057752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 886730512 (or 886730508 counting only the distinct ones).

The product of its (nonzero) digits is 18522000, while the sum is 55.

The spelling of 221533607057752 in words is "two hundred twenty-one trillion, five hundred thirty-three billion, six hundred seven million, fifty-seven thousand, seven hundred fifty-two".