10200121220999 has 16 divisors (see below), whose sum is σ = 10987918292736. Its totient is φ = 9434070576000.

The previous prime is 10200121220941. The next prime is 10200121221071. The reversal of 10200121220999 is 99902212100201.

It is a happy number.

It is not a de Polignac number, because 10200121220999 - 2¹⁶ = 10200121155463 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10200121220599) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13392977 + ... + 14134074.

It is an arithmetic number, because the mean of its divisors is an integer number (686744893296).

Almost surely, 2^{10200121220999} is an apocalyptic number.

10200121220999 is a deficient number, since it is larger than the sum of its proper divisors (787797071737).

10200121220999 is a wasteful number, since it uses less digits than its factorization.

10200121220999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27527446.

The product of its (nonzero) digits is 11664, while the sum is 38.

The spelling of 10200121220999 in words is "ten trillion, two hundred billion, one hundred twenty-one million, two hundred twenty thousand, nine hundred ninety-nine".