221232441030100 has 36 divisors (see below), whose sum is σ = 481712876269884. Its totient is φ = 88190952590080.

The previous prime is 221232441030059. The next prime is 221232441030101. The reversal of 221232441030100 is 1030144232122.

It can be written as a sum of positive squares in 6 ways, for example, as 5302758883984 + 215929682146116 = 2302772^2 + 14694546^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221232441030101) 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, 3775268329 + ... + 3775326928.

It is an arithmetic number, because the mean of its divisors is an integer number (13380913229719).

Almost surely, 2^{221232441030100} is an apocalyptic number.

221232441030100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221232441030100 is an abundant number, since it is smaller than the sum of its proper divisors (260480435239784).

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

221232441030100 is a wasteful number, since it uses less digits than its factorization.

221232441030100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7550595564 (or 7550595557 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 221232441030100 its reverse (1030144232122), we get a palindrome (222262585262222).

The spelling of 221232441030100 in words is "two hundred twenty-one trillion, two hundred thirty-two billion, four hundred forty-one million, thirty thousand, one hundred".