121144152 has 64 divisors (see below), whose sum is σ = 321120000. Its totient is φ = 37977984.

The previous prime is 121144139. The next prime is 121144189. The reversal of 121144152 is 251441121.

It is a super-3 number, since 3×121144152³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

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, 67053 + ... + 68835.

It is an arithmetic number, because the mean of its divisors is an integer number (5017500).

Almost surely, 2^121144152 is an apocalyptic number.

121144152 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121144152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (160560000).

121144152 is an abundant number, since it is smaller than the sum of its proper divisors (199975848).

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

121144152 is a wasteful number, since it uses less digits than its factorization.

121144152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1960 (or 1956 counting only the distinct ones).

The product of its digits is 320, while the sum is 21.

The square root of 121144152 is about 11006.5504132766. The cubic root of 121144152 is about 494.8050819137.

Adding to 121144152 its reverse (251441121), we get a palindrome (372585273).

The spelling of 121144152 in words is "one hundred twenty-one million, one hundred forty-four thousand, one hundred fifty-two".