20100201100111 has 4 divisors (see below), whose sum is σ = 21927492109224. Its totient is φ = 18272910091000.

The previous prime is 20100201100093. The next prime is 20100201100117. The reversal of 20100201100111 is 11100110200102.

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 20100201100111 - 2⁹ = 20100201099599 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 (20100201100117) 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, 913645504540 + ... + 913645504561.

It is an arithmetic number, because the mean of its divisors is an integer number (5481873027306).

Almost surely, 2^{20100201100111} is an apocalyptic number.

20100201100111 is a deficient number, since it is larger than the sum of its proper divisors (1827291009113).

20100201100111 is a wasteful number, since it uses less digits than its factorization.

20100201100111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1827291009112.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 20100201100111 its reverse (11100110200102), we get a palindrome (31200311300213).

Subtracting from 20100201100111 its reverse (11100110200102), we obtain a palindrome (9000090900009).

The spelling of 20100201100111 in words is "twenty trillion, one hundred billion, two hundred one million, one hundred thousand, one hundred eleven".