1020022002 has 12 divisors (see below), whose sum is σ = 2210047710. Its totient is φ = 340007328.

The previous prime is 1020022001. The next prime is 1020022007. The reversal of 1020022002 is 2002200201.

It can be written as a sum of positive squares in only one way, i.e., 945009081 + 75012921 = 30741^2 + 8661^2 .

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (1020022001) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 28333927 + ... + 28333962.

Almost surely, 2^1020022002 is an apocalyptic number.

1020022002 is an abundant number, since it is smaller than the sum of its proper divisors (1190025708).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1020022002 is a wasteful number, since it uses less digits than its factorization.

1020022002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56667897 (or 56667894 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 9.

The square root of 1020022002 is about 31937.7832981564. The cubic root of 1020022002 is about 1006.6299473227.

Adding to 1020022002 its reverse (2002200201), we get a palindrome (3022222203).

The spelling of 1020022002 in words is "one billion, twenty million, twenty-two thousand, two".