20011244042 has 16 divisors (see below), whose sum is σ = 31071837600. Its totient is φ = 9654407280.

The previous prime is 20011243991. The next prime is 20011244053. The reversal of 20011244042 is 24044211002.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18692 + ... + 200927.

It is an arithmetic number, because the mean of its divisors is an integer number (1941989850).

Almost surely, 2^20011244042 is an apocalyptic number.

20011244042 is a deficient number, since it is larger than the sum of its proper divisors (11060593558).

20011244042 is a wasteful number, since it uses less digits than its factorization.

20011244042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221221.

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 20011244042 its reverse (24044211002), we get a palindrome (44055455044).

The spelling of 20011244042 in words is "twenty billion, eleven million, two hundred forty-four thousand, forty-two".