20002101011 has 4 divisors (see below), whose sum is σ = 20002511832. Its totient is φ = 20001690192.

The previous prime is 20002100981. The next prime is 20002101017. The reversal of 20002101011 is 11010120002.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20002101011 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20002101011.

It is not an unprimeable number, because it can be changed into a prime (20002101017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 120746 + ... + 233631.

It is an arithmetic number, because the mean of its divisors is an integer number (5000627958).

Almost surely, 2^20002101011 is an apocalyptic number.

20002101011 is a deficient number, since it is larger than the sum of its proper divisors (410821).

20002101011 is an equidigital number, since it uses as much as digits as its factorization.

20002101011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 410820.

The product of its (nonzero) digits is 4, while the sum is 8.

Adding to 20002101011 its reverse (11010120002), we get a palindrome (31012221013).

The spelling of 20002101011 in words is "twenty billion, two million, one hundred one thousand, eleven".