7022221000 has 64 divisors (see below), whose sum is σ = 16542630000. Its totient is φ = 2789977600.

The previous prime is 7022220977. The next prime is 7022221013. The reversal of 7022221000 is 1222207.

It can be written as a sum of positive squares in 8 ways, for example, as 1173336516 + 5848884484 = 34254^2 + 76478^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 125436 + ... + 172564.

Almost surely, 2^7022221000 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7022221000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8271315000).

7022221000 is an abundant number, since it is smaller than the sum of its proper divisors (9520409000).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7022221000 is a wasteful number, since it uses less digits than its factorization.

7022221000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47299 (or 47285 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 16.

The square root of 7022221000 is about 83798.6933072348. The cubic root of 7022221000 is about 1914.9531991644.

Adding to 7022221000 its reverse (1222207), we get a palindrome (7023443207).

The spelling of 7022221000 in words is "seven billion, twenty-two million, two hundred twenty-one thousand".