3110100100021 has 4 divisors (see below), whose sum is σ = 3121661810700. Its totient is φ = 3098538389344.

The previous prime is 3110100099961. The next prime is 3110100100033. The reversal of 3110100100021 is 1200010010113.

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 432003852900 + 2678096247121 = 657270^2 + 1636489^2 .

It is a cyclic number.

It is not a de Polignac number, because 3110100100021 - 2¹⁵ = 3110100067253 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3110100099980 and 3110100100007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3110104100021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5780854936 + ... + 5780855473.

It is an arithmetic number, because the mean of its divisors is an integer number (780415452675).

Almost surely, 2^{3110100100021} is an apocalyptic number.

It is an amenable number.

3110100100021 is a deficient number, since it is larger than the sum of its proper divisors (11561710679).

3110100100021 is a wasteful number, since it uses less digits than its factorization.

3110100100021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11561710678.

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

Adding to 3110100100021 its reverse (1200010010113), we get a palindrome (4310110110134).

The spelling of 3110100100021 in words is "three trillion, one hundred ten billion, one hundred million, one hundred thousand, twenty-one".