121518130 has 16 divisors (see below), whose sum is σ = 220077504. Its totient is φ = 48308400.

The previous prime is 121518119. The next prime is 121518143. The reversal of 121518130 is 31815121.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35646 + ... + 38905.

It is an arithmetic number, because the mean of its divisors is an integer number (13754844).

Almost surely, 2^121518130 is an apocalyptic number.

121518130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121518130 is a deficient number, since it is larger than the sum of its proper divisors (98559374).

121518130 is a wasteful number, since it uses less digits than its factorization.

121518130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74721.

The product of its (nonzero) digits is 240, while the sum is 22.

The square root of 121518130 is about 11023.5262053483. The cubic root of 121518130 is about 495.3137214756.

The spelling of 121518130 in words is "one hundred twenty-one million, five hundred eighteen thousand, one hundred thirty".