221211022332372 has 24 divisors (see below), whose sum is σ = 516159308337792. Its totient is φ = 73736970840000.

The previous prime is 221211022332371. The next prime is 221211022332373. The reversal of 221211022332372 is 273233220112122.

It is an interprime number because it is at equal distance from previous prime (221211022332371) and next prime (221211022332373).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221211022332371) 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 7 ways as a sum of consecutive naturals, for example, 32849872 + ... + 39006872.

It is an arithmetic number, because the mean of its divisors is an integer number (21506637847408).

Almost surely, 2^{221211022332372} is an apocalyptic number.

It is an amenable number.

221211022332372 is an abundant number, since it is smaller than the sum of its proper divisors (294948286005420).

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

221211022332372 is a wasteful number, since it uses less digits than its factorization.

221211022332372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9151039 (or 9151037 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 33.

Adding to 221211022332372 its reverse (273233220112122), we get a palindrome (494444242444494).

The spelling of 221211022332372 in words is "two hundred twenty-one trillion, two hundred eleven billion, twenty-two million, three hundred thirty-two thousand, three hundred seventy-two".