102032213221 has 4 divisors (see below), whose sum is σ = 102274570444. Its totient is φ = 101789856000.

The previous prime is 102032213219. The next prime is 102032213243. The reversal of 102032213221 is 122312230201.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 14188144996 + 87844068225 = 119114^2 + 296385^2 .

It is a cyclic number.

It is not a de Polignac number, because 102032213221 - 2¹ = 102032213219 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 (102032213251) 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, 121177980 + ... + 121178821.

It is an arithmetic number, because the mean of its divisors is an integer number (25568642611).

Almost surely, 2^102032213221 is an apocalyptic number.

It is an amenable number.

102032213221 is a deficient number, since it is larger than the sum of its proper divisors (242357223).

102032213221 is an equidigital number, since it uses as much as digits as its factorization.

102032213221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242357222.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 102032213221 its reverse (122312230201), we get a palindrome (224344443422).

The spelling of 102032213221 in words is "one hundred two billion, thirty-two million, two hundred thirteen thousand, two hundred twenty-one".