100021113211 has 4 divisors (see below), whose sum is σ = 100692396000. Its totient is φ = 99349830424.

The previous prime is 100021113197. The next prime is 100021113277. The reversal of 100021113211 is 112311120001.

It is a happy number.

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 100021113211 - 2¹⁹ = 100020588923 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100021113191 and 100021113200.

It is not an unprimeable number, because it can be changed into a prime (100021116211) 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, 335641171 + ... + 335641468.

It is an arithmetic number, because the mean of its divisors is an integer number (25173099000).

Almost surely, 2^100021113211 is an apocalyptic number.

100021113211 is a deficient number, since it is larger than the sum of its proper divisors (671282789).

100021113211 is an equidigital number, since it uses as much as digits as its factorization.

100021113211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 671282788.

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 100021113211 its reverse (112311120001), we get a palindrome (212332233212).

The spelling of 100021113211 in words is "one hundred billion, twenty-one million, one hundred thirteen thousand, two hundred eleven".