121144477 has 8 divisors (see below), whose sum is σ = 122965920. Its totient is φ = 119336880.

The previous prime is 121144451. The next prime is 121144481. The reversal of 121144477 is 774441121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 121144477 - 2¹⁵ = 121111709 is a prime.

It is a super-3 number, since 3×121144477³ (a number of 25 digits) contains 333 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 (121144417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14883 + ... + 21535.

It is an arithmetic number, because the mean of its divisors is an integer number (15370740).

Almost surely, 2^121144477 is an apocalyptic number.

It is an amenable number.

121144477 is a deficient number, since it is larger than the sum of its proper divisors (1821443).

121144477 is a wasteful number, since it uses less digits than its factorization.

121144477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6923.

The product of its digits is 6272, while the sum is 31.

The square root of 121144477 is about 11006.5651772022. The cubic root of 121144477 is about 494.8055243935.

Adding to 121144477 its reverse (774441121), we get a palindrome (895585598).

The spelling of 121144477 in words is "one hundred twenty-one million, one hundred forty-four thousand, four hundred seventy-seven".