121671055 has 16 divisors (see below), whose sum is σ = 160696224. Its totient is φ = 87700480.

The previous prime is 121671049. The next prime is 121671083. The reversal of 121671055 is 550176121.

It is not a de Polignac number, because 121671055 - 2³ = 121671047 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 3574 + ... + 16003.

It is an arithmetic number, because the mean of its divisors is an integer number (10043514).

Almost surely, 2^121671055 is an apocalyptic number.

121671055 is a deficient number, since it is larger than the sum of its proper divisors (39025169).

121671055 is a wasteful number, since it uses less digits than its factorization.

121671055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19706.

The product of its (nonzero) digits is 2100, while the sum is 28.

The square root of 121671055 is about 11030.4603258432. The cubic root of 121671055 is about 495.5214109203.

It can be divided in two parts, 121 and 671055, that added together give a palindrome (671176).

The spelling of 121671055 in words is "one hundred twenty-one million, six hundred seventy-one thousand, fifty-five".