121115052 has 54 divisors (see below), whose sum is σ = 313009788. Its totient is φ = 39486768.

The previous prime is 121115041. The next prime is 121115053. The reversal of 121115052 is 250511121.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (121115053) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 78763 + ... + 80285.

Almost surely, 2^121115052 is an apocalyptic number.

121115052 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 121115052, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (156504894).

121115052 is an abundant number, since it is smaller than the sum of its proper divisors (191894736).

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

121115052 is a wasteful number, since it uses less digits than its factorization.

121115052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1627 (or 1575 counting only the distinct ones).

The product of its (nonzero) digits is 100, while the sum is 18.

The square root of 121115052 is about 11005.2283938136. The cubic root of 121115052 is about 494.7654597481.

Adding to 121115052 its reverse (250511121), we get a palindrome (371626173).

The spelling of 121115052 in words is "one hundred twenty-one million, one hundred fifteen thousand, fifty-two".