1002222191 has 8 divisors (see below), whose sum is σ = 1013166000. Its totient is φ = 991310400.

The previous prime is 1002222121. The next prime is 1002222229. The reversal of 1002222191 is 1912222001.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1002222191 - 2¹⁴ = 1002205807 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 (1002222101) 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, 57860 + ... + 73158.

It is an arithmetic number, because the mean of its divisors is an integer number (126645750).

Almost surely, 2^1002222191 is an apocalyptic number.

1002222191 is a deficient number, since it is larger than the sum of its proper divisors (10943809).

1002222191 is a wasteful number, since it uses less digits than its factorization.

1002222191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16009.

The product of its (nonzero) digits is 144, while the sum is 20.

The square root of 1002222191 is about 31657.8930284376. The cubic root of 1002222191 is about 1000.7401823283.

Adding to 1002222191 its reverse (1912222001), we get a palindrome (2914444192).

The spelling of 1002222191 in words is "one billion, two million, two hundred twenty-two thousand, one hundred ninety-one".