121513773 has 16 divisors (see below), whose sum is σ = 172065600. Its totient is φ = 76014336.

The previous prime is 121513751. The next prime is 121513783. The reversal of 121513773 is 377315121.

It is not a de Polignac number, because 121513773 - 2¹³ = 121505581 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 121513773.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121513723) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14386 + ... + 21212.

It is an arithmetic number, because the mean of its divisors is an integer number (10754100).

Almost surely, 2^121513773 is an apocalyptic number.

It is an amenable number.

121513773 is a deficient number, since it is larger than the sum of its proper divisors (50551827).

121513773 is a wasteful number, since it uses less digits than its factorization.

121513773 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7196.

The product of its digits is 4410, while the sum is 30.

The square root of 121513773 is about 11023.3285807872. The cubic root of 121513773 is about 495.3078016246.

Adding to 121513773 its reverse (377315121), we get a palindrome (498828894).

The spelling of 121513773 in words is "one hundred twenty-one million, five hundred thirteen thousand, seven hundred seventy-three".