120421151 has 2 divisors, whose sum is σ = 120421152. Its totient is φ = 120421150.

The previous prime is 120421109. The next prime is 120421153. The reversal of 120421151 is 151124021.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-120421151 is a prime.

Together with 120421153, 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 (120421153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60210575 + 60210576.

It is an arithmetic number, because the mean of its divisors is an integer number (60210576).

Almost surely, 2^120421151 is an apocalyptic number.

120421151 is a deficient number, since it is larger than the sum of its proper divisors (1).

120421151 is an equidigital number, since it uses as much as digits as its factorization.

120421151 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 80, while the sum is 17.

The square root of 120421151 is about 10973.6571388029. The cubic root of 120421151 is about 493.8187676264.

Adding to 120421151 its reverse (151124021), we get a palindrome (271545172).

The spelling of 120421151 in words is "one hundred twenty million, four hundred twenty-one thousand, one hundred fifty-one".