121047277 has 4 divisors (see below), whose sum is σ = 130358620. Its totient is φ = 111735936.

The previous prime is 121047253. The next prime is 121047287. The reversal of 121047277 is 772740121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 772740121 = 97 ⋅7966393.

It can be written as a sum of positive squares in 2 ways, for example, as 78393316 + 42653961 = 8854^2 + 6531^2 .

It is not a de Polignac number, because 121047277 - 2⁷ = 121047149 is a prime.

It is a super-2 number, since 2×121047277² = 29304886538229458, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121047287) 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, 4655652 + ... + 4655677.

It is an arithmetic number, because the mean of its divisors is an integer number (32589655).

Almost surely, 2^121047277 is an apocalyptic number.

It is an amenable number.

121047277 is a deficient number, since it is larger than the sum of its proper divisors (9311343).

121047277 is an equidigital number, since it uses as much as digits as its factorization.

121047277 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9311342.

The product of its (nonzero) digits is 5488, while the sum is 31.

The square root of 121047277 is about 11002.1487446771. The cubic root of 121047277 is about 494.6731536163.

Adding to 121047277 its reverse (772740121), we get a palindrome (893787398).

The spelling of 121047277 in words is "one hundred twenty-one million, forty-seven thousand, two hundred seventy-seven".