10010002101021 has 12 divisors (see below), whose sum is σ = 15571114379548. Its totient is φ = 6160001292864.

The previous prime is 10010002100977. The next prime is 10010002101059. The reversal of 10010002101021 is 12010120001001.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 6671656532025 + 3338345568996 = 2582955^2 + 1827114^2 .

It is not a de Polignac number, because 10010002101021 - 2¹⁴ = 10010002084637 is a prime.

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

It is a junction number, because it is equal to n+sod(n) for n = 10010002100994 and 10010002101012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10010002101061) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 42777786640 + ... + 42777786873.

Almost surely, 2^{10010002101021} is an apocalyptic number.

It is an amenable number.

10010002101021 is a deficient number, since it is larger than the sum of its proper divisors (5561112278527).

10010002101021 is a wasteful number, since it uses less digits than its factorization.

10010002101021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85555573532 (or 85555573529 counting only the distinct ones).

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

Adding to 10010002101021 its reverse (12010120001001), we get a palindrome (22020122102022).

The spelling of 10010002101021 in words is "ten trillion, ten billion, two million, one hundred one thousand, twenty-one".