220242205451 has 2 divisors, whose sum is σ = 220242205452. Its totient is φ = 220242205450.

The previous prime is 220242205441. The next prime is 220242205453. The reversal of 220242205451 is 154502242022.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 220242205451 - 2³⁰ = 219168463627 is a prime.

It is a super-2 number, since 2×220242205451² (a number of 23 digits) contains 22 as substring.

Together with 220242205453, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (220242205453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110121102725 + 110121102726.

It is an arithmetic number, because the mean of its divisors is an integer number (110121102726).

Almost surely, 2^220242205451 is an apocalyptic number.

220242205451 is a deficient number, since it is larger than the sum of its proper divisors (1).

220242205451 is an equidigital number, since it uses as much as digits as its factorization.

220242205451 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12800, while the sum is 29.

Adding to 220242205451 its reverse (154502242022), we get a palindrome (374744447473).

The spelling of 220242205451 in words is "two hundred twenty billion, two hundred forty-two million, two hundred five thousand, four hundred fifty-one".