3102100111221 has 8 divisors (see below), whose sum is σ = 4136149465920. Its totient is φ = 2068058748672.

The previous prime is 3102100111211. The next prime is 3102100111267. The reversal of 3102100111221 is 1221110012013.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 3102100111221 - 2⁷ = 3102100111093 is a prime.

It is a super-2 number, since 2×3102100111221² (a number of 26 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 3102100111221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3102100111211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1024620 + ... + 2693333.

It is an arithmetic number, because the mean of its divisors is an integer number (517018683240).

Almost surely, 2^{3102100111221} is an apocalyptic number.

It is an amenable number.

3102100111221 is a deficient number, since it is larger than the sum of its proper divisors (1034049354699).

3102100111221 is a wasteful number, since it uses less digits than its factorization.

3102100111221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3996075.

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 3102100111221 its reverse (1221110012013), we get a palindrome (4323210123234).

The spelling of 3102100111221 in words is "three trillion, one hundred two billion, one hundred million, one hundred eleven thousand, two hundred twenty-one".