1020000001002 has 16 divisors (see below), whose sum is σ = 2047259791872. Its totient is φ = 338790035360.

The previous prime is 1020000000989. The next prime is 1020000001061. The reversal of 1020000001002 is 2001000000201.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (6).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 302489418 + ... + 302492789.

It is an arithmetic number, because the mean of its divisors is an integer number (127953736992).

Almost surely, 2^{1020000001002} is an apocalyptic number.

1020000001002 is an abundant number, since it is smaller than the sum of its proper divisors (1027259790870).

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

1020000001002 is a wasteful number, since it uses less digits than its factorization.

1020000001002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 604982493.

The product of its (nonzero) digits is 4, while the sum is 6.

Adding to 1020000001002 its reverse (2001000000201), we get a palindrome (3021000001203).

The spelling of 1020000001002 in words is "one trillion, twenty billion, one thousand, two".