7220919124 has 6 divisors (see below), whose sum is σ = 12636608474. Its totient is φ = 3610459560.

The previous prime is 7220919109. The next prime is 7220919127. The reversal of 7220919124 is 4219190227.

It can be written as a sum of positive squares in only one way, i.e., 5297219524 + 1923699600 = 72782^2 + 43860^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7220919127) 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 as a sum of consecutive naturals, namely, 902614887 + ... + 902614894.

Almost surely, 2^7220919124 is an apocalyptic number.

It is an amenable number.

7220919124 is a deficient number, since it is larger than the sum of its proper divisors (5415689350).

7220919124 is a wasteful number, since it uses less digits than its factorization.

7220919124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1805229785 (or 1805229783 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 37.

The square root of 7220919124 is about 84975.9914564108. The cubic root of 7220919124 is about 1932.8470713533.

The spelling of 7220919124 in words is "seven billion, two hundred twenty million, nine hundred nineteen thousand, one hundred twenty-four".