121229647 has 8 divisors (see below), whose sum is σ = 151143552. Its totient is φ = 94464600.

The previous prime is 121229621. The next prime is 121229651. The reversal of 121229647 is 746922121.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121229647 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121229617) 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, 787129 + ... + 787282.

It is an arithmetic number, because the mean of its divisors is an integer number (18892944).

Almost surely, 2^121229647 is an apocalyptic number.

121229647 is a deficient number, since it is larger than the sum of its proper divisors (29913905).

121229647 is a wasteful number, since it uses less digits than its factorization.

121229647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1574429.

The product of its digits is 12096, while the sum is 34.

The square root of 121229647 is about 11010.4335518634. The cubic root of 121229647 is about 494.9214540541.

The spelling of 121229647 in words is "one hundred twenty-one million, two hundred twenty-nine thousand, six hundred forty-seven".