121377127 has 16 divisors (see below), whose sum is σ = 131196672. Its totient is φ = 111879040.

The previous prime is 121377079. The next prime is 121377211. The reversal of 121377127 is 721773121.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-121377127 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 (121377227) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 273768 + ... + 274210.

It is an arithmetic number, because the mean of its divisors is an integer number (8199792).

Almost surely, 2^121377127 is an apocalyptic number.

121377127 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

121377127 is a deficient number, since it is larger than the sum of its proper divisors (9819545).

121377127 is a wasteful number, since it uses less digits than its factorization.

121377127 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 758.

The product of its digits is 4116, while the sum is 31.

The square root of 121377127 is about 11017.1288001911. The cubic root of 121377127 is about 495.1220690004.

The spelling of 121377127 in words is "one hundred twenty-one million, three hundred seventy-seven thousand, one hundred twenty-seven".