200120102002111 has 4 divisors (see below), whose sum is σ = 203511968137800. Its totient is φ = 196728235866424.

The previous prime is 200120102002091. The next prime is 200120102002151. The reversal of 200120102002111 is 111200201021002.

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 200120102002111 - 2¹⁹ = 200120101477823 is a prime.

It is a super-2 number, since 2×200120102002111² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 200120102002091 and 200120102002100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200120102002151) 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, 1695933067756 + ... + 1695933067873.

It is an arithmetic number, because the mean of its divisors is an integer number (50877992034450).

Almost surely, 2^{200120102002111} is an apocalyptic number.

200120102002111 is a deficient number, since it is larger than the sum of its proper divisors (3391866135689).

200120102002111 is an equidigital number, since it uses as much as digits as its factorization.

200120102002111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3391866135688.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 200120102002111 its reverse (111200201021002), we get a palindrome (311320303023113).

The spelling of 200120102002111 in words is "two hundred trillion, one hundred twenty billion, one hundred two million, two thousand, one hundred eleven".