20111043221411 has 16 divisors (see below), whose sum is σ = 20649945988800. Its totient is φ = 19578327550080.

The previous prime is 20111043221389. The next prime is 20111043221417. The reversal of 20111043221411 is 11412234011102.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20111043221411 is a prime.

It is a super-2 number, since 2×20111043221411² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20111043221417) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6077906 + ... + 8784248.

It is an arithmetic number, because the mean of its divisors is an integer number (1290621624300).

Almost surely, 2^{20111043221411} is an apocalyptic number.

20111043221411 is a deficient number, since it is larger than the sum of its proper divisors (538902767389).

20111043221411 is a wasteful number, since it uses less digits than its factorization.

20111043221411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2707486.

The product of its (nonzero) digits is 384, while the sum is 23.

Adding to 20111043221411 its reverse (11412234011102), we get a palindrome (31523277232513).

The spelling of 20111043221411 in words is "twenty trillion, one hundred eleven billion, forty-three million, two hundred twenty-one thousand, four hundred eleven".