1001002022 has 4 divisors (see below), whose sum is σ = 1501503036. Its totient is φ = 500501010.

The previous prime is 1001002001. The next prime is 1001002049. The reversal of 1001002022 is 2202001001.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 250250504 + ... + 250250507.

It is an arithmetic number, because the mean of its divisors is an integer number (375375759).

Almost surely, 2^1001002022 is an apocalyptic number.

1001002022 is a deficient number, since it is larger than the sum of its proper divisors (500501014).

1001002022 is an equidigital number, since it uses as much as digits as its factorization.

1001002022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 500501013.

The product of its (nonzero) digits is 8, while the sum is 8.

The square root of 1001002022 is about 31638.6159937504. The cubic root of 1001002022 is about 1000.3338958345. Note that the first 3 decimals are identical.

Adding to 1001002022 its reverse (2202001001), we get a palindrome (3203003023).

The spelling of 1001002022 in words is "one billion, one million, two thousand, twenty-two".