20011110201211 has 4 divisors (see below), whose sum is σ = 21188234330712. Its totient is φ = 18833986071712.

The previous prime is 20011110201209. The next prime is 20011110201289. The reversal of 20011110201211 is 11210201111002.

It is a happy number.

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 20011110201211 - 2¹ = 20011110201209 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20011110201191 and 20011110201200.

It is not an unprimeable number, because it can be changed into a prime (20011110261211) 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, 588562064725 + ... + 588562064758.

It is an arithmetic number, because the mean of its divisors is an integer number (5297058582678).

Almost surely, 2^{20011110201211} is an apocalyptic number.

20011110201211 is a deficient number, since it is larger than the sum of its proper divisors (1177124129501).

20011110201211 is a wasteful number, since it uses less digits than its factorization.

20011110201211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1177124129500.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 20011110201211 its reverse (11210201111002), we get a palindrome (31221311312213).

The spelling of 20011110201211 in words is "twenty trillion, eleven billion, one hundred ten million, two hundred one thousand, two hundred eleven".