20111214511 has 2 divisors, whose sum is σ = 20111214512. Its totient is φ = 20111214510.

The previous prime is 20111214503. The next prime is 20111214517. The reversal of 20111214511 is 11541211102.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20111214511 - 2³ = 20111214503 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20111214517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10055607255 + 10055607256.

It is an arithmetic number, because the mean of its divisors is an integer number (10055607256).

Almost surely, 2^20111214511 is an apocalyptic number.

20111214511 is a deficient number, since it is larger than the sum of its proper divisors (1).

20111214511 is an equidigital number, since it uses as much as digits as its factorization.

20111214511 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 80, while the sum is 19.

Adding to 20111214511 its reverse (11541211102), we get a palindrome (31652425613).

The spelling of 20111214511 in words is "twenty billion, one hundred eleven million, two hundred fourteen thousand, five hundred eleven".