121154377 has 4 divisors (see below), whose sum is σ = 122814100. Its totient is φ = 119494656.

The previous prime is 121154351. The next prime is 121154381. The reversal of 121154377 is 773451121.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 51998521 + 69155856 = 7211^2 + 8316^2 .

It is a cyclic number.

It is not a de Polignac number, because 121154377 - 2¹⁹ = 120630089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121154347) 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, 829752 + ... + 829897.

It is an arithmetic number, because the mean of its divisors is an integer number (30703525).

Almost surely, 2^121154377 is an apocalyptic number.

It is an amenable number.

121154377 is a deficient number, since it is larger than the sum of its proper divisors (1659723).

121154377 is an equidigital number, since it uses as much as digits as its factorization.

121154377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1659722.

The product of its digits is 5880, while the sum is 31.

The square root of 121154377 is about 11007.0148995993. The cubic root of 121154377 is about 494.8190026287.

The spelling of 121154377 in words is "one hundred twenty-one million, one hundred fifty-four thousand, three hundred seventy-seven".