20223233251 has 4 divisors (see below), whose sum is σ = 21778866592. Its totient is φ = 18667599912.

The previous prime is 20223233213. The next prime is 20223233291. The reversal of 20223233251 is 15233232202.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 20223233251 - 2¹⁹ = 20222708963 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20223233291) 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 3 ways as a sum of consecutive naturals, for example, 777816651 + ... + 777816676.

It is an arithmetic number, because the mean of its divisors is an integer number (5444716648).

Almost surely, 2^20223233251 is an apocalyptic number.

20223233251 is a deficient number, since it is larger than the sum of its proper divisors (1555633341).

20223233251 is a wasteful number, since it uses less digits than its factorization.

20223233251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1555633340.

The product of its (nonzero) digits is 4320, while the sum is 25.

Adding to 20223233251 its reverse (15233232202), we get a palindrome (35456465453).

The spelling of 20223233251 in words is "twenty billion, two hundred twenty-three million, two hundred thirty-three thousand, two hundred fifty-one".