10001221200111 has 8 divisors (see below), whose sum is σ = 13335791624064. Its totient is φ = 6667065788120.

The previous prime is 10001221199989. The next prime is 10001221200121. The reversal of 10001221200111 is 11100212210001.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 10001221200111 - 2²⁹ = 10000684329199 is a prime.

It is a super-3 number, since 3×10001221200111³ (a number of 40 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10001221200121) 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 7 ways as a sum of consecutive naturals, for example, 103696755 + ... + 103793156.

It is an arithmetic number, because the mean of its divisors is an integer number (1666973953008).

Almost surely, 2^{10001221200111} is an apocalyptic number.

10001221200111 is a deficient number, since it is larger than the sum of its proper divisors (3334570423953).

10001221200111 is a wasteful number, since it uses less digits than its factorization.

10001221200111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207505981.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 10001221200111 its reverse (11100212210001), we get a palindrome (21101433410112).

The spelling of 10001221200111 in words is "ten trillion, one billion, two hundred twenty-one million, two hundred thousand, one hundred eleven".