121141162777 has 4 divisors (see below), whose sum is σ = 121141880676. Its totient is φ = 121140444880.

The previous prime is 121141162757. The next prime is 121141162783. The reversal of 121141162777 is 777261141121.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 777261141121 = 25903 ⋅30006607.

It can be written as a sum of positive squares in 2 ways, for example, as 87202680601 + 33938482176 = 295301^2 + 184224^2 .

It is a cyclic number.

It is not a de Polignac number, because 121141162777 - 2¹⁵ = 121141130009 is a prime.

It is a super-3 number, since 3×121141162777³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121141162757) 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, 47823 + ... + 494539.

It is an arithmetic number, because the mean of its divisors is an integer number (30285470169).

Almost surely, 2^121141162777 is an apocalyptic number.

It is an amenable number.

121141162777 is a deficient number, since it is larger than the sum of its proper divisors (717899).

121141162777 is an equidigital number, since it uses as much as digits as its factorization.

121141162777 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 717898.

The product of its digits is 32928, while the sum is 40.

The spelling of 121141162777 in words is "one hundred twenty-one billion, one hundred forty-one million, one hundred sixty-two thousand, seven hundred seventy-seven".