121671121 has 16 divisors (see below), whose sum is σ = 143519040. Its totient is φ = 101689920.

The previous prime is 121671113. The next prime is 121671131. The reversal of 121671121 is 121176121.

It is a cyclic number.

It is not a de Polignac number, because 121671121 - 2³ = 121671113 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121671092 and 121671101.

It is not an unprimeable number, because it can be changed into a prime (121671101) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36886 + ... + 40048.

It is an arithmetic number, because the mean of its divisors is an integer number (8969940).

Almost surely, 2^121671121 is an apocalyptic number.

121671121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

121671121 is a deficient number, since it is larger than the sum of its proper divisors (21847919).

121671121 is a wasteful number, since it uses less digits than its factorization.

121671121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3456.

The product of its digits is 168, while the sum is 22.

The square root of 121671121 is about 11030.4633175583. The cubic root of 121671121 is about 495.5215005182.

The spelling of 121671121 in words is "one hundred twenty-one million, six hundred seventy-one thousand, one hundred twenty-one".