102133221 has 8 divisors (see below), whose sum is σ = 136346784. Its totient is φ = 68004240.

The previous prime is 102133219. The next prime is 102133223. The reversal of 102133221 is 122331201.

It is an interprime number because it is at equal distance from previous prime (102133219) and next prime (102133223).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 102133221 - 2¹ = 102133219 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 102133221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102133223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18271 + ... + 23196.

It is an arithmetic number, because the mean of its divisors is an integer number (17043348).

Almost surely, 2^102133221 is an apocalyptic number.

It is an amenable number.

102133221 is a deficient number, since it is larger than the sum of its proper divisors (34213563).

102133221 is an equidigital number, since it uses as much as digits as its factorization.

102133221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42291.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 102133221 is about 10106.0982085076. The cubic root of 102133221 is about 467.4362001262.

Adding to 102133221 its reverse (122331201), we get a palindrome (224464422).

The spelling of 102133221 in words is "one hundred two million, one hundred thirty-three thousand, two hundred twenty-one".