121227877 has 4 divisors (see below), whose sum is σ = 122100160. Its totient is φ = 120355596.

The previous prime is 121227863. The next prime is 121227881. The reversal of 121227877 is 778722121.

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, and also an emirpimes, since its reverse is a distinct semiprime: 778722121 = 607 ⋅1282903.

It is a cyclic number.

It is not a de Polignac number, because 121227877 - 2¹⁹ = 120703589 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 (121227817) 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, 435933 + ... + 436210.

It is an arithmetic number, because the mean of its divisors is an integer number (30525040).

Almost surely, 2^121227877 is an apocalyptic number.

It is an amenable number.

121227877 is a deficient number, since it is larger than the sum of its proper divisors (872283).

121227877 is an equidigital number, since it uses as much as digits as its factorization.

121227877 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 872282.

The product of its digits is 21952, while the sum is 37.

The square root of 121227877 is about 11010.3531732638. The cubic root of 121227877 is about 494.9190453605.

Adding to 121227877 its reverse (778722121), we get a palindrome (899949998).

The spelling of 121227877 in words is "one hundred twenty-one million, two hundred twenty-seven thousand, eight hundred seventy-seven".