20013211336042 has 4 divisors (see below), whose sum is σ = 30019817004066. Its totient is φ = 10006605668020.

The previous prime is 20013211335907. The next prime is 20013211336099. The reversal of 20013211336042 is 24063311231002.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 12843342905121 + 7169868430921 = 3583761^2 + 2677661^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 20013211336042.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5003302834009 + ... + 5003302834012.

Almost surely, 2^{20013211336042} is an apocalyptic number.

20013211336042 is a deficient number, since it is larger than the sum of its proper divisors (10006605668024).

20013211336042 is a wasteful number, since it uses less digits than its factorization.

20013211336042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10006605668023.

The product of its (nonzero) digits is 5184, while the sum is 28.

Adding to 20013211336042 its reverse (24063311231002), we get a palindrome (44076522567044).

The spelling of 20013211336042 in words is "twenty trillion, thirteen billion, two hundred eleven million, three hundred thirty-six thousand, forty-two".