1021022002 has 64 divisors (see below), whose sum is σ = 2066448384. Its totient is φ = 365394240.

The previous prime is 1021021999. The next prime is 1021022021. The reversal of 1021022002 is 2002201201.

It is a self number, because there is not a number n which added to its sum of digits gives 1021022002.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 445303 + ... + 447589.

It is an arithmetic number, because the mean of its divisors is an integer number (32288256).

Almost surely, 2^1021022002 is an apocalyptic number.

1021022002 is an abundant number, since it is smaller than the sum of its proper divisors (1045426382).

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

1021022002 is a wasteful number, since it uses less digits than its factorization.

1021022002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2543.

The product of its (nonzero) digits is 16, while the sum is 10.

The square root of 1021022002 is about 31953.4349014312. The cubic root of 1021022002 is about 1006.9587968206.

Adding to 1021022002 its reverse (2002201201), we get a palindrome (3023223203).

It can be divided in two parts, 10 and 21022002, that added together give a palindrome (21022012).

The spelling of 1021022002 in words is "one billion, twenty-one million, twenty-two thousand, two".