20121150 has 48 divisors (see below), whose sum is σ = 57032064. Its totient is φ = 4598880.

The previous prime is 20121137. The next prime is 20121169. The reversal of 20121150 is 5112102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8532 + ... + 10631.

It is an arithmetic number, because the mean of its divisors is an integer number (1188168).

Almost surely, 2^20121150 is an apocalyptic number.

20121150 is an abundant number, since it is smaller than the sum of its proper divisors (36910914).

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

20121150 is a wasteful number, since it uses less digits than its factorization.

20121150 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19185 (or 19180 counting only the distinct ones).

The product of its (nonzero) digits is 20, while the sum is 12.

The square root of 20121150 is about 4485.6604864836. The cubic root of 20121150 is about 271.9887448486.

Adding to 20121150 its reverse (5112102), we get a palindrome (25233252).

The spelling of 20121150 in words is "twenty million, one hundred twenty-one thousand, one hundred fifty".