1008102221 has 4 divisors (see below), whose sum is σ = 1152116832. Its totient is φ = 864087612.

The previous prime is 1008102217. The next prime is 1008102229. The reversal of 1008102221 is 1222018001.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1222018001 = 47 ⋅26000383.

It is a cyclic number.

It is not a de Polignac number, because 1008102221 - 2² = 1008102217 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1008102221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1008102229) 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, 72007295 + ... + 72007308.

It is an arithmetic number, because the mean of its divisors is an integer number (288029208).

Almost surely, 2^1008102221 is an apocalyptic number.

It is an amenable number.

1008102221 is a deficient number, since it is larger than the sum of its proper divisors (144014611).

1008102221 is an equidigital number, since it uses as much as digits as its factorization.

1008102221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144014610.

The product of its (nonzero) digits is 64, while the sum is 17.

The square root of 1008102221 is about 31750.6255213972. The cubic root of 1008102221 is about 1002.6934789907.

The spelling of 1008102221 in words is "one billion, eight million, one hundred two thousand, two hundred twenty-one".