220151541521 has 8 divisors (see below), whose sum is σ = 222301819584. Its totient is φ = 218001511440.

The previous prime is 220151541469. The next prime is 220151541529. The reversal of 220151541521 is 125145151022.

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

It is a cyclic number.

It is not a de Polignac number, because 220151541521 - 2¹⁸ = 220151279377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220151541529) 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, 2082266 + ... + 2185436.

It is an arithmetic number, because the mean of its divisors is an integer number (27787727448).

Almost surely, 2^220151541521 is an apocalyptic number.

It is an amenable number.

220151541521 is a deficient number, since it is larger than the sum of its proper divisors (2150278063).

220151541521 is a wasteful number, since it uses less digits than its factorization.

220151541521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123991.

The product of its (nonzero) digits is 4000, while the sum is 29.

Adding to 220151541521 its reverse (125145151022), we get a palindrome (345296692543).

The spelling of 220151541521 in words is "two hundred twenty billion, one hundred fifty-one million, five hundred forty-one thousand, five hundred twenty-one".