121370121 has 12 divisors (see below), whose sum is σ = 179043072. Its totient is φ = 79191576.

The previous prime is 121370113. The next prime is 121370129. The reversal of 121370121 is 121073121.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (121370113) and next prime (121370129).

It is not a de Polignac number, because 121370121 - 2³ = 121370113 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121370094 and 121370103.

It is not an unprimeable number, because it can be changed into a prime (121370129) 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, 143041 + ... + 143886.

It is an arithmetic number, because the mean of its divisors is an integer number (14920256).

Almost surely, 2^121370121 is an apocalyptic number.

It is an amenable number.

121370121 is a deficient number, since it is larger than the sum of its proper divisors (57672951).

121370121 is a wasteful number, since it uses less digits than its factorization.

121370121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 286980 (or 286977 counting only the distinct ones).

The product of its (nonzero) digits is 84, while the sum is 18.

The square root of 121370121 is about 11016.8108361721. The cubic root of 121370121 is about 495.1125425158.

The spelling of 121370121 in words is "one hundred twenty-one million, three hundred seventy thousand, one hundred twenty-one".