220052421 has 6 divisors (see below), whose sum is σ = 317853510. Its totient is φ = 146701608.

The previous prime is 220052389. The next prime is 220052447. The reversal of 220052421 is 124250022.

It can be written as a sum of positive squares in only one way, i.e., 119049921 + 101002500 = 10911^2 + 10050^2 .

It is not a de Polignac number, because 220052421 - 2⁵ = 220052389 is a prime.

It is a super-2 number, since 2×220052421² = 96846135975922482, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 220052394 and 220052403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220052821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12225126 + ... + 12225143.

It is an arithmetic number, because the mean of its divisors is an integer number (52975585).

Almost surely, 2^220052421 is an apocalyptic number.

It is an amenable number.

220052421 is a deficient number, since it is larger than the sum of its proper divisors (97801089).

220052421 is a wasteful number, since it uses less digits than its factorization.

220052421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24450275 (or 24450272 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 220052421 is about 14834.1639804877. The cubic root of 220052421 is about 603.7290176986.

The spelling of 220052421 in words is "two hundred twenty million, fifty-two thousand, four hundred twenty-one".