10200010021021 has 4 divisors (see below), whose sum is σ = 10329124072000. Its totient is φ = 10070895970044.

The previous prime is 10200010021009. The next prime is 10200010021037. The reversal of 10200010021021 is 12012001000201.

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 10200010021021 - 2⁹ = 10200010020509 is a prime.

It is a super-3 number, since 3×10200010021021³ (a number of 40 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10200010020989 and 10200010021007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10200010021121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64557025371 + ... + 64557025528.

It is an arithmetic number, because the mean of its divisors is an integer number (2582281018000).

Almost surely, 2^{10200010021021} is an apocalyptic number.

It is an amenable number.

10200010021021 is a deficient number, since it is larger than the sum of its proper divisors (129114050979).

10200010021021 is an equidigital number, since it uses as much as digits as its factorization.

10200010021021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129114050978.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 10200010021021 its reverse (12012001000201), we get a palindrome (22212011021222).

The spelling of 10200010021021 in words is "ten trillion, two hundred billion, ten million, twenty-one thousand, twenty-one".