1021002020002 has 8 divisors (see below), whose sum is σ = 1598090118336. Its totient is φ = 488305313892.

The previous prime is 1021002019957. The next prime is 1021002020047. The reversal of 1021002020002 is 2000202001201.

It is an interprime number because it is at equal distance from previous prime (1021002019957) and next prime (1021002020047).

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11097847998 + ... + 11097848089.

It is an arithmetic number, because the mean of its divisors is an integer number (199761264792).

Almost surely, 2^{1021002020002} is an apocalyptic number.

1021002020002 is a deficient number, since it is larger than the sum of its proper divisors (577088098334).

1021002020002 is a wasteful number, since it uses less digits than its factorization.

1021002020002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22195696112.

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

Adding to 1021002020002 its reverse (2000202001201), we get a palindrome (3021204021203).

It can be divided in two parts, 10 and 21002020002, that added together give a palindrome (21002020012).

The spelling of 1021002020002 in words is "one trillion, twenty-one billion, two million, twenty thousand, two".