10200010001221 has 4 divisors (see below), whose sum is σ = 10232807461344. Its totient is φ = 10167212541100.

The previous prime is 10200010001213. The next prime is 10200010001231. The reversal of 10200010001221 is 12210001000201.

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 10200010001221 - 2³ = 10200010001213 is a prime.

It is a super-3 number, since 3×10200010001221³ (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 = 10200010001198 and 10200010001207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10200010001231) 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, 16398729595 + ... + 16398730216.

It is an arithmetic number, because the mean of its divisors is an integer number (2558201865336).

Almost surely, 2^{10200010001221} is an apocalyptic number.

It is an amenable number.

10200010001221 is a deficient number, since it is larger than the sum of its proper divisors (32797460123).

10200010001221 is an equidigital number, since it uses as much as digits as its factorization.

10200010001221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32797460122.

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

Adding to 10200010001221 its reverse (12210001000201), we get a palindrome (22410011001422).

The spelling of 10200010001221 in words is "ten trillion, two hundred billion, ten million, one thousand, two hundred twenty-one".