121667877 has 12 divisors (see below), whose sum is σ = 180492780. Its totient is φ = 78919488.

The previous prime is 121667873. The next prime is 121667879. The reversal of 121667877 is 778766121.

It can be written as a sum of positive squares in 2 ways, for example, as 89756676 + 31911201 = 9474^2 + 5649^2 .

It is not a de Polignac number, because 121667877 - 2² = 121667873 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121667873) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 182352 + ... + 183017.

It is an arithmetic number, because the mean of its divisors is an integer number (15041065).

Almost surely, 2^121667877 is an apocalyptic number.

It is an amenable number.

121667877 is a deficient number, since it is larger than the sum of its proper divisors (58824903).

121667877 is a wasteful number, since it uses less digits than its factorization.

121667877 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 365412 (or 365409 counting only the distinct ones).

The product of its digits is 197568, while the sum is 45.

The square root of 121667877 is about 11030.3162692644. The cubic root of 121667877 is about 495.5170966081.

The spelling of 121667877 in words is "one hundred twenty-one million, six hundred sixty-seven thousand, eight hundred seventy-seven".