100212101111 has 4 divisors (see below), whose sum is σ = 101480608800. Its totient is φ = 98943593424.

The previous prime is 100212101029. The next prime is 100212101131. The reversal of 100212101111 is 111101212001.

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 100212101111 - 2²⁶ = 100144992247 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100212101092 and 100212101101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100212101131) 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, 634253726 + ... + 634253883.

It is an arithmetic number, because the mean of its divisors is an integer number (25370152200).

Almost surely, 2^100212101111 is an apocalyptic number.

100212101111 is a deficient number, since it is larger than the sum of its proper divisors (1268507689).

100212101111 is an equidigital number, since it uses as much as digits as its factorization.

100212101111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1268507688.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 100212101111 its reverse (111101212001), we get a palindrome (211313313112).

The spelling of 100212101111 in words is "one hundred billion, two hundred twelve million, one hundred one thousand, one hundred eleven".