220203221251 has 16 divisors (see below), whose sum is σ = 240362953600. Its totient is φ = 200519929728.

The previous prime is 220203221243. The next prime is 220203221261. The reversal of 220203221251 is 152122302022.

It is a cyclic number.

It is not a de Polignac number, because 220203221251 - 2³ = 220203221243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220203221201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14811 + ... + 663796.

It is an arithmetic number, because the mean of its divisors is an integer number (15022684600).

Almost surely, 2^220203221251 is an apocalyptic number.

220203221251 is a deficient number, since it is larger than the sum of its proper divisors (20159732349).

220203221251 is a wasteful number, since it uses less digits than its factorization.

220203221251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 678958.

The product of its (nonzero) digits is 960, while the sum is 22.

Adding to 220203221251 its reverse (152122302022), we get a palindrome (372325523273).

The spelling of 220203221251 in words is "two hundred twenty billion, two hundred three million, two hundred twenty-one thousand, two hundred fifty-one".