7221901672 has 32 divisors (see below), whose sum is σ = 14294700000. Its totient is φ = 3411073728.

The previous prime is 7221901669. The next prime is 7221901679. The reversal of 7221901672 is 2761091227.

It is not an unprimeable number, because it can be changed into a prime (7221901679) 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 7 ways as a sum of consecutive naturals, for example, 15022 + ... + 121117.

It is an arithmetic number, because the mean of its divisors is an integer number (446709375).

Almost surely, 2^7221901672 is an apocalyptic number.

It is an amenable number.

7221901672 is a deficient number, since it is larger than the sum of its proper divisors (7072798328).

7221901672 is a wasteful number, since it uses less digits than its factorization.

7221901672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136513 (or 136509 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 37.

The square root of 7221901672 is about 84981.7725868318. The cubic root of 7221901672 is about 1932.9347346577.

Adding to 7221901672 its reverse (2761091227), we get a palindrome (9982992899).

The spelling of 7221901672 in words is "seven billion, two hundred twenty-one million, nine hundred one thousand, six hundred seventy-two".