10200001211111 has 4 divisors (see below), whose sum is σ = 10200504960000. Its totient is φ = 10199497462224.

The previous prime is 10200001211087. The next prime is 10200001211263. The reversal of 10200001211111 is 11111210000201.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 10200001211111 - 2¹⁴ = 10200001194727 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10200001211092 and 10200001211101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10200001211011) 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, 251844071 + ... + 251884568.

It is an arithmetic number, because the mean of its divisors is an integer number (2550126240000).

Almost surely, 2^{10200001211111} is an apocalyptic number.

10200001211111 is a deficient number, since it is larger than the sum of its proper divisors (503748889).

10200001211111 is an equidigital number, since it uses as much as digits as its factorization.

10200001211111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 503748888.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 10200001211111 its reverse (11111210000201), we get a palindrome (21311211211312).

The spelling of 10200001211111 in words is "ten trillion, two hundred billion, one million, two hundred eleven thousand, one hundred eleven".