121829127623877 has 16 divisors (see below), whose sum is σ = 162502269838848. Its totient is φ = 81187703531520.

The previous prime is 121829127623873. The next prime is 121829127623887. The reversal of 121829127623877 is 778326721928121.

It is not a de Polignac number, because 121829127623877 - 2² = 121829127623873 is a prime.

It is a super-2 number, since 2×121829127623877² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121829127623873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 337125228 + ... + 337486410.

It is an arithmetic number, because the mean of its divisors is an integer number (10156391864928).

Almost surely, 2^{121829127623877} is an apocalyptic number.

It is an amenable number.

121829127623877 is a deficient number, since it is larger than the sum of its proper divisors (40673142214971).

121829127623877 is a wasteful number, since it uses less digits than its factorization.

121829127623877 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 404780.

The product of its digits is 56899584, while the sum is 66.

The spelling of 121829127623877 in words is "one hundred twenty-one trillion, eight hundred twenty-nine billion, one hundred twenty-seven million, six hundred twenty-three thousand, eight hundred seventy-seven".