100121111311211 has 4 divisors (see below), whose sum is σ = 101531267808624. Its totient is φ = 98710954813800.

The previous prime is 100121111311157. The next prime is 100121111311223. The reversal of 100121111311211 is 112113111121001.

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 100121111311211 - 2⁶ = 100121111311147 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 100121111311211.

It is not an unprimeable number, because it can be changed into a prime (100121111311241) 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, 705078248600 + ... + 705078248741.

It is an arithmetic number, because the mean of its divisors is an integer number (25382816952156).

Almost surely, 2^{100121111311211} is an apocalyptic number.

100121111311211 is a deficient number, since it is larger than the sum of its proper divisors (1410156497413).

100121111311211 is an equidigital number, since it uses as much as digits as its factorization.

100121111311211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1410156497412.

The product of its (nonzero) digits is 12, while the sum is 17.

Adding to 100121111311211 its reverse (112113111121001), we get a palindrome (212234222432212).

The spelling of 100121111311211 in words is "one hundred trillion, one hundred twenty-one billion, one hundred eleven million, three hundred eleven thousand, two hundred eleven".