100100021011 has 4 divisors (see below), whose sum is σ = 101741005024. Its totient is φ = 98459037000.

The previous prime is 100100020997. The next prime is 100100021023. The reversal of 100100021011 is 110120001001.

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

It is a cyclic number.

It is not a de Polignac number, because 100100021011 - 2⁹ = 100100020499 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100100020985 and 100100021003.

It is not an unprimeable number, because it can be changed into a prime (100100021111) 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, 820491915 + ... + 820492036.

It is an arithmetic number, because the mean of its divisors is an integer number (25435251256).

Almost surely, 2^100100021011 is an apocalyptic number.

100100021011 is a deficient number, since it is larger than the sum of its proper divisors (1640984013).

100100021011 is an equidigital number, since it uses as much as digits as its factorization.

100100021011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1640984012.

The product of its (nonzero) digits is 2, while the sum is 7.

Adding to 100100021011 its reverse (110120001001), we get a palindrome (210220022012).

The spelling of 100100021011 in words is "one hundred billion, one hundred million, twenty-one thousand, eleven".