20101002011 has 8 divisors (see below), whose sum is σ = 21289528800. Its totient is φ = 18913154688.

The previous prime is 20101001983. The next prime is 20101002023. The reversal of 20101002011 is 11020010102.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20101002011 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 20101002011.

It is not an unprimeable number, because it can be changed into a prime (20101005011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 108311 + ... + 227888.

It is an arithmetic number, because the mean of its divisors is an integer number (2661191100).

Almost surely, 2^20101002011 is an apocalyptic number.

20101002011 is a deficient number, since it is larger than the sum of its proper divisors (1188526789).

20101002011 is a wasteful number, since it uses less digits than its factorization.

20101002011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 339733.

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

Adding to 20101002011 its reverse (11020010102), we get a palindrome (31121012113).

The spelling of 20101002011 in words is "twenty billion, one hundred one million, two thousand, eleven".