121700151 has 10 divisors (see below), whose sum is σ = 181799112. Its totient is φ = 81133380.

The previous prime is 121700147. The next prime is 121700167. The reversal of 121700151 is 151007121.

It is a happy number.

It is not a de Polignac number, because 121700151 - 2² = 121700147 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121700101) 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 9 ways as a sum of consecutive naturals, for example, 751155 + ... + 751316.

Almost surely, 2^121700151 is an apocalyptic number.

121700151 is a deficient number, since it is larger than the sum of its proper divisors (60098961).

121700151 is an equidigital number, since it uses as much as digits as its factorization.

121700151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1502483 (or 1502474 counting only the distinct ones).

The product of its (nonzero) digits is 70, while the sum is 18.

The square root of 121700151 is about 11031.7791402838. The cubic root of 121700151 is about 495.5609068707.

Adding to 121700151 its reverse (151007121), we get a palindrome (272707272).

The spelling of 121700151 in words is "one hundred twenty-one million, seven hundred thousand, one hundred fifty-one".