120210551 has 2 divisors, whose sum is σ = 120210552. Its totient is φ = 120210550.

The previous prime is 120210523. The next prime is 120210557. The reversal of 120210551 is 155012021.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-120210551 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (120210557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60105275 + 60105276.

It is an arithmetic number, because the mean of its divisors is an integer number (60105276).

Almost surely, 2^120210551 is an apocalyptic number.

120210551 is a deficient number, since it is larger than the sum of its proper divisors (1).

120210551 is an equidigital number, since it uses as much as digits as its factorization.

120210551 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 100, while the sum is 17.

The square root of 120210551 is about 10964.0572326124. The cubic root of 120210551 is about 493.5307259859.

Adding to 120210551 its reverse (155012021), we get a palindrome (275222572).

The spelling of 120210551 in words is "one hundred twenty million, two hundred ten thousand, five hundred fifty-one".