120722551 has 2 divisors, whose sum is σ = 120722552. Its totient is φ = 120722550.

The previous prime is 120722519. The next prime is 120722579. The reversal of 120722551 is 155227021.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 120722551 - 2⁵ = 120722519 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (120722501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60361275 + 60361276.

It is an arithmetic number, because the mean of its divisors is an integer number (60361276).

Almost surely, 2^120722551 is an apocalyptic number.

120722551 is a deficient number, since it is larger than the sum of its proper divisors (1).

120722551 is an equidigital number, since it uses as much as digits as its factorization.

120722551 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1400, while the sum is 25.

The square root of 120722551 is about 10987.3814441841. The cubic root of 120722551 is about 494.2304145114.

Adding to 120722551 its reverse (155227021), we get a palindrome (275949572).

The spelling of 120722551 in words is "one hundred twenty million, seven hundred twenty-two thousand, five hundred fifty-one".