121812773 has 4 divisors (see below), whose sum is σ = 121842048. Its totient is φ = 121783500.

The previous prime is 121812751. The next prime is 121812793. The reversal of 121812773 is 377218121.

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 121812773 - 2²² = 117618469 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 (121812703) 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, 7103 + ... + 17148.

It is an arithmetic number, because the mean of its divisors is an integer number (30460512).

Almost surely, 2^121812773 is an apocalyptic number.

It is an amenable number.

121812773 is a deficient number, since it is larger than the sum of its proper divisors (29275).

121812773 is an equidigital number, since it uses as much as digits as its factorization.

121812773 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29274.

The product of its digits is 4704, while the sum is 32.

The square root of 121812773 is about 11036.8823949519. The cubic root of 121812773 is about 495.7137246853.

The spelling of 121812773 in words is "one hundred twenty-one million, eight hundred twelve thousand, seven hundred seventy-three".