121447077 has 4 divisors (see below), whose sum is σ = 161929440. Its totient is φ = 80964716.

The previous prime is 121447063. The next prime is 121447111. The reversal of 121447077 is 770744121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 121447077 - 2¹⁰ = 121446053 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121448077) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20241177 + ... + 20241182.

It is an arithmetic number, because the mean of its divisors is an integer number (40482360).

Almost surely, 2^121447077 is an apocalyptic number.

It is an amenable number.

121447077 is a deficient number, since it is larger than the sum of its proper divisors (40482363).

121447077 is an equidigital number, since it uses as much as digits as its factorization.

121447077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40482362.

The product of its (nonzero) digits is 10976, while the sum is 33.

The square root of 121447077 is about 11020.3029450193. The cubic root of 121447077 is about 495.2171641761.

The spelling of 121447077 in words is "one hundred twenty-one million, four hundred forty-seven thousand, seventy-seven".