221153532000 has 96 divisors (see below), whose sum is σ = 724499010144. Its totient is φ = 58974272000.

The previous prime is 221153531939. The next prime is 221153532007. The reversal of 221153532000 is 235351122.

It is a happy number.

221153532000 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (96).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221153532007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9202731 + ... + 9226730.

It is an arithmetic number, because the mean of its divisors is an integer number (7546864689).

Almost surely, 2^221153532000 is an apocalyptic number.

221153532000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221153532000 is an abundant number, since it is smaller than the sum of its proper divisors (503345478144).

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

221153532000 is a wasteful number, since it uses less digits than its factorization.

221153532000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18429489 (or 18429471 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 24.

Adding to 221153532000 its reverse (235351122), we get a palindrome (221388883122).

The spelling of 221153532000 in words is "two hundred twenty-one billion, one hundred fifty-three million, five hundred thirty-two thousand".