20511222014 has 16 divisors (see below), whose sum is σ = 31253357328. Its totient is φ = 10093704192.

The previous prime is 20511221989. The next prime is 20511222037. The reversal of 20511222014 is 41022211502.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 88124 + ... + 220880.

It is an arithmetic number, because the mean of its divisors is an integer number (1953334833).

Almost surely, 2^20511222014 is an apocalyptic number.

20511222014 is a deficient number, since it is larger than the sum of its proper divisors (10742135314).

20511222014 is a wasteful number, since it uses less digits than its factorization.

20511222014 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133979.

The product of its (nonzero) digits is 320, while the sum is 20.

Adding to 20511222014 its reverse (41022211502), we get a palindrome (61533433516).

The spelling of 20511222014 in words is "twenty billion, five hundred eleven million, two hundred twenty-two thousand, fourteen".