5021221121 has 8 divisors (see below), whose sum is σ = 5746125120. Its totient is φ = 4298213808.

The previous prime is 5021221081. The next prime is 5021221129. The reversal of 5021221121 is 1211221205.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 5021221121 - 2¹⁸ = 5020958977 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 5021221121.

It is not an unprimeable number, because it can be changed into a prime (5021221129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 468491 + ... + 479088.

It is an arithmetic number, because the mean of its divisors is an integer number (718265640).

Almost surely, 2^5021221121 is an apocalyptic number.

It is an amenable number.

5021221121 is a deficient number, since it is larger than the sum of its proper divisors (724903999).

5021221121 is an equidigital number, since it uses as much as digits as its factorization.

5021221121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 948343.

The product of its (nonzero) digits is 80, while the sum is 17.

The square root of 5021221121 is about 70860.5752234626. The cubic root of 5021221121 is about 1712.3917059834.

Adding to 5021221121 its reverse (1211221205), we get a palindrome (6232442326).

The spelling of 5021221121 in words is "five billion, twenty-one million, two hundred twenty-one thousand, one hundred twenty-one".