10021001001 has 32 divisors (see below), whose sum is σ = 14727398400. Its totient is φ = 6010390080.

The previous prime is 10021000991. The next prime is 10021001009. The reversal of 10021001001 is 10010012001.

It is not a de Polignac number, because 10021001001 - 2¹³ = 10020992809 is a prime.

It is a super-3 number, since 3×10021001001³ (a number of 31 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (10021001009) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5606830 + ... + 5608616.

It is an arithmetic number, because the mean of its divisors is an integer number (460231200).

Almost surely, 2^10021001001 is an apocalyptic number.

10021001001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

10021001001 is a deficient number, since it is larger than the sum of its proper divisors (4706397399).

10021001001 is a wasteful number, since it uses less digits than its factorization.

10021001001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3469.

The product of its (nonzero) digits is 2, while the sum is 6.

Adding to 10021001001 its reverse (10010012001), we get a palindrome (20031013002).

The spelling of 10021001001 in words is "ten billion, twenty-one million, one thousand, one".