20001242011 has 8 divisors (see below), whose sum is σ = 20490994944. Its totient is φ = 19511580480.

The previous prime is 20001241969. The next prime is 20001242017. The reversal of 20001242011 is 11024210002.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20001242011 - 2¹¹ = 20001239963 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20001241982 and 20001242000.

It is not an unprimeable number, because it can be changed into a prime (20001242017) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 684870 + ... + 713476.

It is an arithmetic number, because the mean of its divisors is an integer number (2561374368).

Almost surely, 2^20001242011 is an apocalyptic number.

20001242011 is a deficient number, since it is larger than the sum of its proper divisors (489752933).

20001242011 is a wasteful number, since it uses less digits than its factorization.

20001242011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45701.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 20001242011 its reverse (11024210002), we get a palindrome (31025452013).

The spelling of 20001242011 in words is "twenty billion, one million, two hundred forty-two thousand, eleven".