121033155 has 16 divisors (see below), whose sum is σ = 196545024. Its totient is φ = 63587040.

The previous prime is 121033139. The next prime is 121033169. The reversal of 121033155 is 551330121.

It is not a de Polignac number, because 121033155 - 2⁴ = 121033139 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59211 + ... + 61220.

It is an arithmetic number, because the mean of its divisors is an integer number (12284064).

Almost surely, 2^121033155 is an apocalyptic number.

121033155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

121033155 is a deficient number, since it is larger than the sum of its proper divisors (75511869).

121033155 is a wasteful number, since it uses less digits than its factorization.

121033155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120506.

The product of its (nonzero) digits is 450, while the sum is 21.

The square root of 121033155 is about 11001.5069422330. The cubic root of 121033155 is about 494.6539158272.

Adding to 121033155 its reverse (551330121), we get a palindrome (672363276).

The spelling of 121033155 in words is "one hundred twenty-one million, thirty-three thousand, one hundred fifty-five".