100211121213109 has 4 divisors (see below), whose sum is σ = 100211460132204. Its totient is φ = 100210782294016.

The previous prime is 100211121213101. The next prime is 100211121213121. The reversal of 100211121213109 is 901312121112001.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 72539544510225 + 27671576702884 = 8517015^2 + 5260378^2 .

It is a cyclic number.

It is not a de Polignac number, because 100211121213109 - 2³ = 100211121213101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100211121213101) 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, 169015642 + ... + 169607515.

It is an arithmetic number, because the mean of its divisors is an integer number (25052865033051).

Almost surely, 2^{100211121213109} is an apocalyptic number.

It is an amenable number.

100211121213109 is a deficient number, since it is larger than the sum of its proper divisors (338919095).

100211121213109 is an equidigital number, since it uses as much as digits as its factorization.

100211121213109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 338919094.

The product of its (nonzero) digits is 216, while the sum is 25.

The spelling of 100211121213109 in words is "one hundred trillion, two hundred eleven billion, one hundred twenty-one million, two hundred thirteen thousand, one hundred nine".