121502150 has 144 divisors (see below), whose sum is σ = 300814080. Its totient is φ = 35640000.

The previous prime is 121502137. The next prime is 121502159. The reversal of 121502150 is 51205121.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121502159) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 804575 + ... + 804725.

Almost surely, 2^121502150 is an apocalyptic number.

121502150 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121502150 is an abundant number, since it is smaller than the sum of its proper divisors (179311930).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121502150 is a wasteful number, since it uses less digits than its factorization.

121502150 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211 (or 195 counting only the distinct ones).

The product of its (nonzero) digits is 100, while the sum is 17.

The square root of 121502150 is about 11022.8013680734. The cubic root of 121502150 is about 495.2920087752.

Adding to 121502150 its reverse (51205121), we get a palindrome (172707271).

The spelling of 121502150 in words is "one hundred twenty-one million, five hundred two thousand, one hundred fifty".