221232140052 has 48 divisors (see below), whose sum is σ = 643584410112. Its totient is φ = 57462893280.

The previous prime is 221232140029. The next prime is 221232140069. The reversal of 221232140052 is 250041232122.

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, 119713438 + ... + 119715285.

It is an arithmetic number, because the mean of its divisors is an integer number (13408008544).

Almost surely, 2^221232140052 is an apocalyptic number.

221232140052 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

221232140052 is an abundant number, since it is smaller than the sum of its proper divisors (422352270060).

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

221232140052 is a wasteful number, since it uses less digits than its factorization.

221232140052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239428748 (or 239428746 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 24.

Adding to 221232140052 its reverse (250041232122), we get a palindrome (471273372174).

The spelling of 221232140052 in words is "two hundred twenty-one billion, two hundred thirty-two million, one hundred forty thousand, fifty-two".