121773867 has 4 divisors (see below), whose sum is σ = 162365160. Its totient is φ = 81182576.

The previous prime is 121773857. The next prime is 121773881. The reversal of 121773867 is 768377121.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 121773867 - 2¹² = 121769771 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121773857) 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, 20295642 + ... + 20295647.

It is an arithmetic number, because the mean of its divisors is an integer number (40591290).

Almost surely, 2^121773867 is an apocalyptic number.

121773867 is a deficient number, since it is larger than the sum of its proper divisors (40591293).

121773867 is an equidigital number, since it uses as much as digits as its factorization.

121773867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40591292.

The product of its digits is 98784, while the sum is 42.

The square root of 121773867 is about 11035.1197093643. The cubic root of 121773867 is about 495.6609434338.

The spelling of 121773867 in words is "one hundred twenty-one million, seven hundred seventy-three thousand, eight hundred sixty-seven".