1020220002002 has 4 divisors (see below), whose sum is σ = 1530330003006. Its totient is φ = 510110001000.

The previous prime is 1020220001959. The next prime is 1020220002007. The reversal of 1020220002002 is 2002000220201.

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

It can be written as a sum of positive squares in only one way, i.e., 584198820241 + 436021181761 = 764329^2 + 660319^2 .

It is not an unprimeable number, because it can be changed into a prime (1020220002007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 255055000499 + ... + 255055000502.

Almost surely, 2^{1020220002002} is an apocalyptic number.

1020220002002 is a deficient number, since it is larger than the sum of its proper divisors (510110001004).

1020220002002 is an equidigital number, since it uses as much as digits as its factorization.

1020220002002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 510110001003.

The product of its (nonzero) digits is 32, while the sum is 11.

Adding to 1020220002002 its reverse (2002000220201), we get a palindrome (3022220222203).

The spelling of 1020220002002 in words is "one trillion, twenty billion, two hundred twenty million, two thousand, two".