121200154 has 8 divisors (see below), whose sum is σ = 182714400. Its totient is φ = 60295356.

The previous prime is 121200151. The next prime is 121200181. The reversal of 121200154 is 451002121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (121200151) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 151864 + ... + 152659.

It is an arithmetic number, because the mean of its divisors is an integer number (22839300).

Almost surely, 2^121200154 is an apocalyptic number.

121200154 is a deficient number, since it is larger than the sum of its proper divisors (61514246).

121200154 is a wasteful number, since it uses less digits than its factorization.

121200154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 304724.

The product of its (nonzero) digits is 80, while the sum is 16.

The square root of 121200154 is about 11009.0941498381. The cubic root of 121200154 is about 494.8813156263.

Adding to 121200154 its reverse (451002121), we get a palindrome (572202275).

The spelling of 121200154 in words is "one hundred twenty-one million, two hundred thousand, one hundred fifty-four".