10021010021001 has 48 divisors (see below), whose sum is σ = 16950998413440. Its totient is φ = 5585010359040.

The previous prime is 10021010020999. The next prime is 10021010021003. The reversal of 10021010021001 is 10012001012001.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (10021010020999) and next prime (10021010021003).

It is not a de Polignac number, because 10021010021001 - 2¹ = 10021010020999 is a prime.

It is a super-2 number, since 2×10021010021001² (a number of 27 digits) contains 22 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (10021010021003) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 8401246 + ... + 9519608.

It is an arithmetic number, because the mean of its divisors is an integer number (353145800280).

Almost surely, 2^{10021010021001} is an apocalyptic number.

It is an amenable number.

10021010021001 is a deficient number, since it is larger than the sum of its proper divisors (6929988392439).

10021010021001 is a wasteful number, since it uses less digits than its factorization.

10021010021001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1121886 (or 1121883 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 10021010021001 its reverse (10012001012001), we get a palindrome (20033011033002).

The spelling of 10021010021001 in words is "ten trillion, twenty-one billion, ten million, twenty-one thousand, one".