100121311 has 4 divisors (see below), whose sum is σ = 103573800. Its totient is φ = 96668824.

The previous prime is 100121299. The next prime is 100121321. The reversal of 100121311 is 113121001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 113121001 = 7 ⋅16160143.

It is a cyclic number.

It is not a de Polignac number, because 100121311 - 2¹⁵ = 100088543 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 (100121321) 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, 1726201 + ... + 1726258.

It is an arithmetic number, because the mean of its divisors is an integer number (25893450).

Almost surely, 2^100121311 is an apocalyptic number.

100121311 is a deficient number, since it is larger than the sum of its proper divisors (3452489).

100121311 is an equidigital number, since it uses as much as digits as its factorization.

100121311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3452488.

The product of its (nonzero) digits is 6, while the sum is 10.

The square root of 100121311 is about 10006.0637115701. The cubic root of 100121311 is about 464.3464994431.

Adding to 100121311 its reverse (113121001), we get a palindrome (213242312).

The spelling of 100121311 in words is "one hundred million, one hundred twenty-one thousand, three hundred eleven".