10200012001221 has 24 divisors (see below), whose sum is σ = 16248005888160. Its totient is φ = 5671049140512.

The previous prime is 10200012001187. The next prime is 10200012001229. The reversal of 10200012001221 is 12210021000201.

It is not a de Polignac number, because 10200012001221 - 2⁷ = 10200012001093 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10200012001197 and 10200012001206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10200012001229) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 937668031 + ... + 937678908.

It is an arithmetic number, because the mean of its divisors is an integer number (677000245340).

Almost surely, 2^{10200012001221} is an apocalyptic number.

It is an amenable number.

10200012001221 is a deficient number, since it is larger than the sum of its proper divisors (6047993886939).

10200012001221 is a wasteful number, since it uses less digits than its factorization.

10200012001221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1875346993 (or 1875346986 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 10200012001221 its reverse (12210021000201), we get a palindrome (22410033001422).

The spelling of 10200012001221 in words is "ten trillion, two hundred billion, twelve million, one thousand, two hundred twenty-one".