7221247746019 has 4 divisors (see below), whose sum is σ = 7221285193320. Its totient is φ = 7221210298720.

The previous prime is 7221247746001. The next prime is 7221247746059. The reversal of 7221247746019 is 9106477421227.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 7221247746019 - 2⁷ = 7221247745891 is a prime.

It is a super-2 number, since 2×7221247746019² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7221247746059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18432889 + ... + 18820570.

It is an arithmetic number, because the mean of its divisors is an integer number (1805321298330).

Almost surely, 2^{7221247746019} is an apocalyptic number.

7221247746019 is a deficient number, since it is larger than the sum of its proper divisors (37447301).

7221247746019 is a wasteful number, since it uses less digits than its factorization.

7221247746019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37447300.

The product of its (nonzero) digits is 2370816, while the sum is 52.

The spelling of 7221247746019 in words is "seven trillion, two hundred twenty-one billion, two hundred forty-seven million, seven hundred forty-six thousand, nineteen".