121240277 has 8 divisors (see below), whose sum is σ = 128574936. Its totient is φ = 113928192.

The previous prime is 121240261. The next prime is 121240283. The reversal of 121240277 is 772042121.

It can be written as a sum of positive squares in 4 ways, for example, as 2669956 + 118570321 = 1634^2 + 10889^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 121240277 - 2⁴ = 121240261 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 (121260277) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6143 + ... + 16739.

It is an arithmetic number, because the mean of its divisors is an integer number (16071867).

Almost surely, 2^121240277 is an apocalyptic number.

121240277 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

121240277 is a deficient number, since it is larger than the sum of its proper divisors (7334659).

121240277 is a wasteful number, since it uses less digits than its factorization.

121240277 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11287.

The product of its (nonzero) digits is 1568, while the sum is 26.

The square root of 121240277 is about 11010.9162652342. The cubic root of 121240277 is about 494.9359193312.

Adding to 121240277 its reverse (772042121), we get a palindrome (893282398).

The spelling of 121240277 in words is "one hundred twenty-one million, two hundred forty thousand, two hundred seventy-seven".