3100311122221 has 4 divisors (see below), whose sum is σ = 3100564159132. Its totient is φ = 3100058085312.

The previous prime is 3100311122213. The next prime is 3100311122299. The reversal of 3100311122221 is 1222211130013.

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 776180382121 + 2324130740100 = 881011^2 + 1524510^2 .

It is a cyclic number.

It is not a de Polignac number, because 3100311122221 - 2³ = 3100311122213 is a prime.

It is a super-2 number, since 2×3100311122221² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3100311102221) 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, 126500076 + ... + 126524581.

It is an arithmetic number, because the mean of its divisors is an integer number (775141039783).

Almost surely, 2^{3100311122221} is an apocalyptic number.

It is an amenable number.

3100311122221 is a deficient number, since it is larger than the sum of its proper divisors (253036911).

3100311122221 is a wasteful number, since it uses less digits than its factorization.

3100311122221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253036910.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 3100311122221 its reverse (1222211130013), we get a palindrome (4322522252234).

The spelling of 3100311122221 in words is "three trillion, one hundred billion, three hundred eleven million, one hundred twenty-two thousand, two hundred twenty-one".