220151421171 has 12 divisors (see below), whose sum is σ = 346905269880. Its totient is φ = 133425103680.

The previous prime is 220151421143. The next prime is 220151421173. The reversal of 220151421171 is 171124151022.

220151421171 is a `hidden beast` number, since 2 + 20 + 1 + 51 + 421 + 171 = 666.

It is not a de Polignac number, because 220151421171 - 2¹⁰ = 220151420147 is a prime.

It is a super-2 number, since 2×220151421171² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (220151421173) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1111875766 + ... + 1111875963.

It is an arithmetic number, because the mean of its divisors is an integer number (28908772490).

Almost surely, 2^220151421171 is an apocalyptic number.

220151421171 is a deficient number, since it is larger than the sum of its proper divisors (126753848709).

220151421171 is a wasteful number, since it uses less digits than its factorization.

220151421171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2223751746 (or 2223751743 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 27.

Adding to 220151421171 its reverse (171124151022), we get a palindrome (391275572193).

The spelling of 220151421171 in words is "two hundred twenty billion, one hundred fifty-one million, four hundred twenty-one thousand, one hundred seventy-one".