121377 has 4 divisors (see below), whose sum is σ = 161840. Its totient is φ = 80916.

The previous prime is 121369. The next prime is 121379. The reversal of 121377 is 773121.

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: 773121 = 3 ⋅257707.

It is not a de Polignac number, because 121377 - 2³ = 121369 is a prime.

It is a super-2 number, since 2×121377² = 29464752258, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121379) 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, 20227 + ... + 20232.

It is an arithmetic number, because the mean of its divisors is an integer number (40460).

2¹²¹³⁷⁷ is an apocalyptic number.

It is an amenable number.

121377 is a deficient number, since it is larger than the sum of its proper divisors (40463).

121377 is an equidigital number, since it uses as much as digits as its factorization.

121377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40462.

The product of its digits is 294, while the sum is 21.

The square root of 121377 is about 348.3920205745. The cubic root of 121377 is about 49.5121896314.

Adding to 121377 its reverse (773121), we get a palindrome (894498).

The spelling of 121377 in words is "one hundred twenty-one thousand, three hundred seventy-seven", and thus it is an iban number.