20111214042 has 12 divisors (see below), whose sum is σ = 43574297130. Its totient is φ = 6703738008.

The previous prime is 20111213999. The next prime is 20111214077. The reversal of 20111214042 is 24041211102.

It can be written as a sum of positive squares in only one way, i.e., 16907540841 + 3203673201 = 130029^2 + 56601^2 .

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 1117289669 = 20111214042 / (2 + 0 + 1 + 1 + 1 + 2 + 1 + 4 + 0 + 4 + 2).

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 5 ways as a sum of consecutive naturals, for example, 558644817 + ... + 558644852.

Almost surely, 2^20111214042 is an apocalyptic number.

20111214042 is an abundant number, since it is smaller than the sum of its proper divisors (23463083088).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20111214042 is a wasteful number, since it uses less digits than its factorization.

20111214042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1117289677 (or 1117289674 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 20111214042 its reverse (24041211102), we get a palindrome (44152425144).

The spelling of 20111214042 in words is "twenty billion, one hundred eleven million, two hundred fourteen thousand, forty-two".