121506951 has 8 divisors (see below), whose sum is σ = 162086400. Its totient is φ = 80966072.

The previous prime is 121506943. The next prime is 121506961. The reversal of 121506951 is 159605121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 121506951 - 2³ = 121506943 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121506941) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1245 + ... + 15638.

It is an arithmetic number, because the mean of its divisors is an integer number (20260800).

Almost surely, 2^121506951 is an apocalyptic number.

121506951 is a deficient number, since it is larger than the sum of its proper divisors (40579449).

121506951 is a wasteful number, since it uses less digits than its factorization.

121506951 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19285.

The product of its (nonzero) digits is 2700, while the sum is 30.

The square root of 121506951 is about 11023.0191417778. The cubic root of 121506951 is about 495.2985322966.

The spelling of 121506951 in words is "one hundred twenty-one million, five hundred six thousand, nine hundred fifty-one".