1002021122 has 8 divisors (see below), whose sum is σ = 1551516672. Its totient is φ = 484848900.

The previous prime is 1002021121. The next prime is 1002021149. The reversal of 1002021122 is 2211202001.

It is a happy number.

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

It is not an unprimeable number, because it can be changed into a prime (1002021121) 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, 8080754 + ... + 8080877.

It is an arithmetic number, because the mean of its divisors is an integer number (193939584).

Almost surely, 2^1002021122 is an apocalyptic number.

1002021122 is a deficient number, since it is larger than the sum of its proper divisors (549495550).

1002021122 is a wasteful number, since it uses less digits than its factorization.

1002021122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16161664.

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 1002021122 is about 31654.7172156063. The cubic root of 1002021122 is about 1000.6732539607.

Adding to 1002021122 its reverse (2211202001), we get a palindrome (3213223123).

The spelling of 1002021122 in words is "one billion, two million, twenty-one thousand, one hundred twenty-two".