20001002202011 has 4 divisors (see below), whose sum is σ = 20146994918952. Its totient is φ = 19855009485072.

The previous prime is 20001002202001. The next prime is 20001002202019. The reversal of 20001002202011 is 11020220010002.

It is a happy number.

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-20001002202011 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20001002201983 and 20001002202001.

It is not an unprimeable number, because it can be changed into a prime (20001002202019) 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, 72996358265 + ... + 72996358538.

It is an arithmetic number, because the mean of its divisors is an integer number (5036748729738).

Almost surely, 2^{20001002202011} is an apocalyptic number.

20001002202011 is a deficient number, since it is larger than the sum of its proper divisors (145992716941).

20001002202011 is a wasteful number, since it uses less digits than its factorization.

20001002202011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145992716940.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 20001002202011 its reverse (11020220010002), we get a palindrome (31021222212013).

The spelling of 20001002202011 in words is "twenty trillion, one billion, two million, two hundred two thousand, eleven".