100211110021 has 4 divisors (see below), whose sum is σ = 109321210944. Its totient is φ = 91101009100.

The previous prime is 100211109997. The next prime is 100211110037. The reversal of 100211110021 is 120011112001.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 100211110021 - 2⁵ = 100211109989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100211110061) 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, 4555050445 + ... + 4555050466.

It is an arithmetic number, because the mean of its divisors is an integer number (27330302736).

Almost surely, 2^100211110021 is an apocalyptic number.

100211110021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

100211110021 is a deficient number, since it is larger than the sum of its proper divisors (9110100923).

100211110021 is an equidigital number, since it uses as much as digits as its factorization.

100211110021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9110100922.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 100211110021 its reverse (120011112001), we get a palindrome (220222222022).

The spelling of 100211110021 in words is "one hundred billion, two hundred eleven million, one hundred ten thousand, twenty-one".