121148877 has 4 divisors (see below), whose sum is σ = 161531840. Its totient is φ = 80765916.

The previous prime is 121148873. The next prime is 121148903. The reversal of 121148877 is 778841121.

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: 778841121 = 3 ⋅259613707.

It is not a de Polignac number, because 121148877 - 2² = 121148873 is a prime.

It is a super-2 number, since 2×121148877² = 29354100796722258, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121148873) 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, 20191477 + ... + 20191482.

It is an arithmetic number, because the mean of its divisors is an integer number (40382960).

Almost surely, 2^121148877 is an apocalyptic number.

It is an amenable number.

121148877 is a deficient number, since it is larger than the sum of its proper divisors (40382963).

121148877 is an equidigital number, since it uses as much as digits as its factorization.

121148877 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40382962.

The product of its digits is 25088, while the sum is 39.

The square root of 121148877 is about 11006.7650560916. The cubic root of 121148877 is about 494.8115148109.

Adding to 121148877 its reverse (778841121), we get a palindrome (899989998).

The spelling of 121148877 in words is "one hundred twenty-one million, one hundred forty-eight thousand, eight hundred seventy-seven".