221012031332 has 6 divisors (see below), whose sum is σ = 386771054838. Its totient is φ = 110506015664.

The previous prime is 221012031323. The next prime is 221012031353. The reversal of 221012031332 is 233130210122.

It can be written as a sum of positive squares in only one way, i.e., 218102076196 + 2909955136 = 467014^2 + 53944^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27626503913 + ... + 27626503920.

It is an arithmetic number, because the mean of its divisors is an integer number (64461842473).

Almost surely, 2^221012031332 is an apocalyptic number.

It is an amenable number.

221012031332 is a deficient number, since it is larger than the sum of its proper divisors (165759023506).

221012031332 is a wasteful number, since it uses less digits than its factorization.

221012031332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55253007837 (or 55253007835 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 221012031332 its reverse (233130210122), we get a palindrome (454142241454).

The spelling of 221012031332 in words is "two hundred twenty-one billion, twelve million, thirty-one thousand, three hundred thirty-two".