4021220517 has 16 divisors (see below), whose sum is σ = 5446264320. Its totient is φ = 2638766592.

The previous prime is 4021220473. The next prime is 4021220527. The reversal of 4021220517 is 7150221204.

It is not a de Polignac number, because 4021220517 - 2¹⁰ = 4021219493 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4021220527) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25773 + ... + 93309.

It is an arithmetic number, because the mean of its divisors is an integer number (340391520).

Almost surely, 2^4021220517 is an apocalyptic number.

It is an amenable number.

4021220517 is a deficient number, since it is larger than the sum of its proper divisors (1425043803).

4021220517 is a wasteful number, since it uses less digits than its factorization.

4021220517 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67852.

The product of its (nonzero) digits is 1120, while the sum is 24.

The square root of 4021220517 is about 63413.0942077423. The cubic root of 4021220517 is about 1590.2032250819.

The spelling of 4021220517 in words is "four billion, twenty-one million, two hundred twenty thousand, five hundred seventeen".