1021010002002 has 24 divisors (see below), whose sum is σ = 2212545441600. Its totient is φ = 340281728280.

The previous prime is 1021010001997. The next prime is 1021010002049. The reversal of 1021010002002 is 2002000101201.

It is a super-2 number, since 2×1021010002002² (a number of 25 digits) contains 22 as substring.

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

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4463574 + ... + 4686737.

It is an arithmetic number, because the mean of its divisors is an integer number (92189393400).

Almost surely, 2^{1021010002002} is an apocalyptic number.

1021010002002 is an abundant number, since it is smaller than the sum of its proper divisors (1191535439598).

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

1021010002002 is a wasteful number, since it uses less digits than its factorization.

1021010002002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9156518 (or 9156515 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 1021010002002 its reverse (2002000101201), we get a palindrome (3023010103203).

The spelling of 1021010002002 in words is "one trillion, twenty-one billion, ten million, two thousand, two".