3122101111221 has 6 divisors (see below), whose sum is σ = 4509701605110. Its totient is φ = 2081400740808.

The previous prime is 3122101111211. The next prime is 3122101111247. The reversal of 3122101111221 is 1221111012213.

It is a happy number.

3122101111221 is a `hidden beast` number, since 312 + 21 + 0 + 1 + 111 + 221 = 666.

It can be written as a sum of positive squares in only one way, i.e., 3099747572100 + 22353539121 = 1760610^2 + 149511^2 .

It is not a de Polignac number, because 3122101111221 - 2¹⁷ = 3122100980149 is a prime.

It is a super-2 number, since 2×3122101111221² (a number of 26 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 3122101111194 and 3122101111203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3122101111211) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 173450061726 + ... + 173450061743.

It is an arithmetic number, because the mean of its divisors is an integer number (751616934185).

Almost surely, 2^{3122101111221} is an apocalyptic number.

It is an amenable number.

3122101111221 is a deficient number, since it is larger than the sum of its proper divisors (1387600493889).

3122101111221 is a wasteful number, since it uses less digits than its factorization.

3122101111221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 346900123475 (or 346900123472 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 18.

Adding to 3122101111221 its reverse (1221111012213), we get a palindrome (4343212123434).

The spelling of 3122101111221 in words is "three trillion, one hundred twenty-two billion, one hundred one million, one hundred eleven thousand, two hundred twenty-one".