7110121221 has 32 divisors (see below), whose sum is σ = 12044883200. Its totient is φ = 4060704960.

The previous prime is 7110121199. The next prime is 7110121223. The reversal of 7110121221 is 1221210117.

It is not a de Polignac number, because 7110121221 - 2¹⁷ = 7109990149 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 7110121194 and 7110121203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7110121223) 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 31 ways as a sum of consecutive naturals, for example, 374211 + ... + 392751.

It is an arithmetic number, because the mean of its divisors is an integer number (376402600).

Almost surely, 2^7110121221 is an apocalyptic number.

It is an amenable number.

7110121221 is a deficient number, since it is larger than the sum of its proper divisors (4934761979).

7110121221 is a wasteful number, since it uses less digits than its factorization.

7110121221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20586 (or 20580 counting only the distinct ones).

The product of its (nonzero) digits is 56, while the sum is 18.

The square root of 7110121221 is about 84321.5347405394. The cubic root of 7110121221 is about 1922.9101936492.

Adding to 7110121221 its reverse (1221210117), we get a palindrome (8331331338).

The spelling of 7110121221 in words is "seven billion, one hundred ten million, one hundred twenty-one thousand, two hundred twenty-one".