20111210020199 has 4 divisors (see below), whose sum is σ = 20759958730560. Its totient is φ = 19462461309840.

The previous prime is 20111210020171. The next prime is 20111210020211. The reversal of 20111210020199 is 99102001211102.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20111210020199 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 (20111210020399) 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, 324374355134 + ... + 324374355195.

It is an arithmetic number, because the mean of its divisors is an integer number (5189989682640).

Almost surely, 2^{20111210020199} is an apocalyptic number.

20111210020199 is a deficient number, since it is larger than the sum of its proper divisors (648748710361).

20111210020199 is an equidigital number, since it uses as much as digits as its factorization.

20111210020199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 648748710360.

The product of its (nonzero) digits is 648, while the sum is 29.

The spelling of 20111210020199 in words is "twenty trillion, one hundred eleven billion, two hundred ten million, twenty thousand, one hundred ninety-nine".