122151461 has 2 divisors, whose sum is σ = 122151462. Its totient is φ = 122151460.

The previous prime is 122151397. The next prime is 122151473. The reversal of 122151461 is 164151221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 71656225 + 50495236 = 8465^2 + 7106^2 .

It is a cyclic number.

It is not a de Polignac number, because 122151461 - 2⁶ = 122151397 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122151481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61075730 + 61075731.

It is an arithmetic number, because the mean of its divisors is an integer number (61075731).

Almost surely, 2^122151461 is an apocalyptic number.

It is an amenable number.

122151461 is a deficient number, since it is larger than the sum of its proper divisors (1).

122151461 is an equidigital number, since it uses as much as digits as its factorization.

122151461 is an evil number, because the sum of its binary digits is even.

The product of its digits is 480, while the sum is 23.

The square root of 122151461 is about 11052.2152078215. The cubic root of 122151461 is about 496.1727267076.

The spelling of 122151461 in words is "one hundred twenty-two million, one hundred fifty-one thousand, four hundred sixty-one".