220305220251 has 32 divisors (see below), whose sum is σ = 324589524480. Its totient is φ = 132201214464.

The previous prime is 220305220249. The next prime is 220305220259. The reversal of 220305220251 is 152022503022.

It is not a de Polignac number, because 220305220251 - 2¹ = 220305220249 is a prime.

It is not an unprimeable number, because it can be changed into a prime (220305220259) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13989540 + ... + 14005278.

It is an arithmetic number, because the mean of its divisors is an integer number (10143422640).

Almost surely, 2^220305220251 is an apocalyptic number.

220305220251 is a deficient number, since it is larger than the sum of its proper divisors (104284304229).

220305220251 is a wasteful number, since it uses less digits than its factorization.

220305220251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27715.

The product of its (nonzero) digits is 2400, while the sum is 24.

Adding to 220305220251 its reverse (152022503022), we get a palindrome (372327723273).

The spelling of 220305220251 in words is "two hundred twenty billion, three hundred five million, two hundred twenty thousand, two hundred fifty-one".