20111214442 has 32 divisors (see below), whose sum is σ = 33121880064. Its totient is φ = 9082497600.

The previous prime is 20111214391. The next prime is 20111214463. The reversal of 20111214442 is 24441211102.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6620548 + ... + 6623584.

It is an arithmetic number, because the mean of its divisors is an integer number (1035058752).

Almost surely, 2^20111214442 is an apocalyptic number.

20111214442 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20111214442 is a deficient number, since it is larger than the sum of its proper divisors (13010665622).

20111214442 is a wasteful number, since it uses less digits than its factorization.

20111214442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4894.

The product of its (nonzero) digits is 512, while the sum is 22.

Adding to 20111214442 its reverse (24441211102), we get a palindrome (44552425544).

The spelling of 20111214442 in words is "twenty billion, one hundred eleven million, two hundred fourteen thousand, four hundred forty-two".