1021012001 has 8 divisors (see below), whose sum is σ = 1054464000. Its totient is φ = 987592320.

The previous prime is 1021011991. The next prime is 1021012033. The reversal of 1021012001 is 1002101201.

1021012001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1021012001 is a prime.

It is a super-3 number, since 3×1021012001³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1021012001.

It is not an unprimeable number, because it can be changed into a prime (1021012801) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67505 + ... + 81233.

It is an arithmetic number, because the mean of its divisors is an integer number (131808000).

Almost surely, 2^1021012001 is an apocalyptic number.

It is an amenable number.

1021012001 is a deficient number, since it is larger than the sum of its proper divisors (33451999).

1021012001 is a wasteful number, since it uses less digits than its factorization.

1021012001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16159.

The product of its (nonzero) digits is 4, while the sum is 8.

The square root of 1021012001 is about 31953.2784077002. The cubic root of 1021012001 is about 1006.9555090599.

Adding to 1021012001 its reverse (1002101201), we get a palindrome (2023113202).

It can be divided in two parts, 102101200 and 1, that added together give a palindrome (102101201).

The spelling of 1021012001 in words is "one billion, twenty-one million, twelve thousand, one".