121155671 has 8 divisors (see below), whose sum is σ = 149114784. Its totient is φ = 95859360.

The previous prime is 121155667. The next prime is 121155673. The reversal of 121155671 is 176551121.

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 121155671 - 2² = 121155667 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121155673) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 665600 + ... + 665781.

It is an arithmetic number, because the mean of its divisors is an integer number (18639348).

Almost surely, 2^121155671 is an apocalyptic number.

121155671 is a deficient number, since it is larger than the sum of its proper divisors (27959113).

121155671 is a wasteful number, since it uses less digits than its factorization.

121155671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1331401.

The product of its digits is 2100, while the sum is 29.

The square root of 121155671 is about 11007.0736801386. The cubic root of 121155671 is about 494.8207642750.

The spelling of 121155671 in words is "one hundred twenty-one million, one hundred fifty-five thousand, six hundred seventy-one".