10210100000021 has 4 divisors (see below), whose sum is σ = 10447544186112. Its totient is φ = 9972655813932.

The previous prime is 10210099999973. The next prime is 10210100000053. The reversal of 10210100000021 is 12000000101201.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 10210100000021 - 2¹⁰ = 10210099998997 is a prime.

It is a super-2 number, since 2×10210100000021² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 10210099999954 and 10210100000008.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10210100006021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 118722092981 + ... + 118722093066.

It is an arithmetic number, because the mean of its divisors is an integer number (2611886046528).

Almost surely, 2^{10210100000021} is an apocalyptic number.

It is an amenable number.

10210100000021 is a deficient number, since it is larger than the sum of its proper divisors (237444186091).

10210100000021 is an equidigital number, since it uses as much as digits as its factorization.

10210100000021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 237444186090.

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

Adding to 10210100000021 its reverse (12000000101201), we get a palindrome (22210100101222).

The spelling of 10210100000021 in words is "ten trillion, two hundred ten billion, one hundred million, twenty-one", and thus it is an aban number.