102233232221 has 4 divisors (see below), whose sum is σ = 102672001692. Its totient is φ = 101794462752.

The previous prime is 102233232217. The next prime is 102233232253. The reversal of 102233232221 is 122232332201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 122232332201 = 7 ⋅17461761743.

It can be written as a sum of positive squares in 2 ways, for example, as 29972265625 + 72260966596 = 173125^2 + 268814^2 .

It is a cyclic number.

It is not a de Polignac number, because 102233232221 - 2² = 102233232217 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102233232271) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 219384386 + ... + 219384851.

It is an arithmetic number, because the mean of its divisors is an integer number (25668000423).

Almost surely, 2^102233232221 is an apocalyptic number.

It is an amenable number.

102233232221 is a deficient number, since it is larger than the sum of its proper divisors (438769471).

102233232221 is an equidigital number, since it uses as much as digits as its factorization.

102233232221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 438769470.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 102233232221 its reverse (122232332201), we get a palindrome (224465564422).

The spelling of 102233232221 in words is "one hundred two billion, two hundred thirty-three million, two hundred thirty-two thousand, two hundred twenty-one".