220720151 has 2 divisors, whose sum is σ = 220720152. Its totient is φ = 220720150.

The previous prime is 220720127. The next prime is 220720153. The reversal of 220720151 is 151027022.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 220720151 - 2¹⁴ = 220703767 is a prime.

Together with 220720153, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220720153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110360075 + 110360076.

It is an arithmetic number, because the mean of its divisors is an integer number (110360076).

Almost surely, 2^220720151 is an apocalyptic number.

220720151 is a deficient number, since it is larger than the sum of its proper divisors (1).

220720151 is an equidigital number, since it uses as much as digits as its factorization.

220720151 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 280, while the sum is 20.

The square root of 220720151 is about 14856.6534253176. The cubic root of 220720151 is about 604.3390555384.

Adding to 220720151 its reverse (151027022), we get a palindrome (371747173).

The spelling of 220720151 in words is "two hundred twenty million, seven hundred twenty thousand, one hundred fifty-one".