221552132652 has 36 divisors (see below), whose sum is σ = 560203392840. Its totient is φ = 73828446912.

The previous prime is 221552132651. The next prime is 221552132689. The reversal of 221552132652 is 256231255122.

221552132652 is a `hidden beast` number, since 2 + 21 + 552 + 1 + 32 + 6 + 52 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (221552132651) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 806377 + ... + 1045632.

Almost surely, 2^221552132652 is an apocalyptic number.

It is an amenable number.

221552132652 is an abundant number, since it is smaller than the sum of its proper divisors (338651260188).

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

221552132652 is a wasteful number, since it uses less digits than its factorization.

221552132652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1855342 (or 1855337 counting only the distinct ones).

The product of its digits is 72000, while the sum is 36.

Adding to 221552132652 its reverse (256231255122), we get a palindrome (477783387774).

The spelling of 221552132652 in words is "two hundred twenty-one billion, five hundred fifty-two million, one hundred thirty-two thousand, six hundred fifty-two".