121322151 has 8 divisors (see below), whose sum is σ = 179736560. Its totient is φ = 80881416.

The previous prime is 121322137. The next prime is 121322161. The reversal of 121322151 is 151223121.

It is not a de Polignac number, because 121322151 - 2⁷ = 121322023 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121322101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2246680 + ... + 2246733.

It is an arithmetic number, because the mean of its divisors is an integer number (22467070).

Almost surely, 2^121322151 is an apocalyptic number.

121322151 is a deficient number, since it is larger than the sum of its proper divisors (58414409).

121322151 is an equidigital number, since it uses as much as digits as its factorization.

121322151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4493422 (or 4493416 counting only the distinct ones).

The product of its digits is 120, while the sum is 18.

The square root of 121322151 is about 11014.6334936756. The cubic root of 121322151 is about 495.0473049374.

Adding to 121322151 its reverse (151223121), we get a palindrome (272545272).

The spelling of 121322151 in words is "one hundred twenty-one million, three hundred twenty-two thousand, one hundred fifty-one".