20223220220251 has 2 divisors, whose sum is σ = 20223220220252. Its totient is φ = 20223220220250.

The previous prime is 20223220220209. The next prime is 20223220220263. The reversal of 20223220220251 is 15202202232202.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20223220220251 - 2¹⁷ = 20223220089179 is a prime.

It is not a weakly prime, because it can be changed into another prime (20223220200251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10111610110125 + 10111610110126.

It is an arithmetic number, because the mean of its divisors is an integer number (10111610110126).

Almost surely, 2^{20223220220251} is an apocalyptic number.

20223220220251 is a deficient number, since it is larger than the sum of its proper divisors (1).

20223220220251 is an equidigital number, since it uses as much as digits as its factorization.

20223220220251 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3840, while the sum is 25.

Adding to 20223220220251 its reverse (15202202232202), we get a palindrome (35425422452453).

The spelling of 20223220220251 in words is "twenty trillion, two hundred twenty-three billion, two hundred twenty million, two hundred twenty thousand, two hundred fifty-one".