100020959811 has 16 divisors (see below), whose sum is σ = 148186876320. Its totient is φ = 66677185440.

The previous prime is 100020959747. The next prime is 100020959837. The reversal of 100020959811 is 118959020001.

It is not a de Polignac number, because 100020959811 - 2⁶ = 100020959747 is a prime.

It is not an unprimeable number, because it can be changed into a prime (100020959861) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 502801 + ... + 672941.

It is an arithmetic number, because the mean of its divisors is an integer number (9261679770).

Almost surely, 2^100020959811 is an apocalyptic number.

100020959811 is a deficient number, since it is larger than the sum of its proper divisors (48165916509).

100020959811 is a wasteful number, since it uses less digits than its factorization.

100020959811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191923 (or 191917 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 36.

Adding to 100020959811 its reverse (118959020001), we get a palindrome (218979979812).

The spelling of 100020959811 in words is "one hundred billion, twenty million, nine hundred fifty-nine thousand, eight hundred eleven".