121246155 has 12 divisors (see below), whose sum is σ = 210160080. Its totient is φ = 64664592.

The previous prime is 121246117. The next prime is 121246183. The reversal of 121246155 is 551642121.

121246155 is a `hidden beast` number, since 1 + 21 + 24 + 615 + 5 = 666.

It is not a de Polignac number, because 121246155 - 2¹⁷ = 121115083 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1347135 + ... + 1347224.

It is an arithmetic number, because the mean of its divisors is an integer number (17513340).

Almost surely, 2^121246155 is an apocalyptic number.

121246155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

121246155 is a deficient number, since it is larger than the sum of its proper divisors (88913925).

121246155 is a wasteful number, since it uses less digits than its factorization.

121246155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2694370 (or 2694367 counting only the distinct ones).

The product of its digits is 2400, while the sum is 27.

The square root of 121246155 is about 11011.1831789322. The cubic root of 121246155 is about 494.9439177356.

Adding to 121246155 its reverse (551642121), we get a palindrome (672888276).

The spelling of 121246155 in words is "one hundred twenty-one million, two hundred forty-six thousand, one hundred fifty-five".