7198867221 has 64 divisors (see below), whose sum is σ = 12354736128. Its totient is φ = 3623989248.

The previous prime is 7198867183. The next prime is 7198867259. The reversal of 7198867221 is 1227688917.

It is an interprime number because it is at equal distance from previous prime (7198867183) and next prime (7198867259).

It is not a de Polignac number, because 7198867221 - 2¹⁰ = 7198866197 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7198867271) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3621990 + ... + 3623976.

It is an arithmetic number, because the mean of its divisors is an integer number (193042752).

Almost surely, 2^7198867221 is an apocalyptic number.

It is an amenable number.

7198867221 is a deficient number, since it is larger than the sum of its proper divisors (5155868907).

7198867221 is a wasteful number, since it uses less digits than its factorization.

7198867221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2610.

The product of its digits is 677376, while the sum is 51.

The square root of 7198867221 is about 84846.1385155506. The cubic root of 7198867221 is about 1930.8774966685.

The spelling of 7198867221 in words is "seven billion, one hundred ninety-eight million, eight hundred sixty-seven thousand, two hundred twenty-one".