121370447 has 4 divisors (see below), whose sum is σ = 132404136. Its totient is φ = 110336760.

The previous prime is 121370441. The next prime is 121370489. The reversal of 121370447 is 744073121.

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 121370447 - 2⁶ = 121370383 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121370441) 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, 5516828 + ... + 5516849.

It is an arithmetic number, because the mean of its divisors is an integer number (33101034).

Almost surely, 2^121370447 is an apocalyptic number.

121370447 is a deficient number, since it is larger than the sum of its proper divisors (11033689).

121370447 is a wasteful number, since it uses less digits than its factorization.

121370447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11033688.

The product of its (nonzero) digits is 4704, while the sum is 29.

The square root of 121370447 is about 11016.8256317326. The cubic root of 121370447 is about 495.1129858060.

The spelling of 121370447 in words is "one hundred twenty-one million, three hundred seventy thousand, four hundred forty-seven".