121161852 has 96 divisors (see below), whose sum is σ = 361894400. Its totient is φ = 34338816.

The previous prime is 121161779. The next prime is 121161853. The reversal of 121161852 is 258161121.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121161853) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 104508 + ... + 105660.

Almost surely, 2^121161852 is an apocalyptic number.

121161852 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 121161852, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (180947200).

121161852 is an abundant number, since it is smaller than the sum of its proper divisors (240732548).

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

121161852 is a wasteful number, since it uses less digits than its factorization.

121161852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1312 (or 1304 counting only the distinct ones).

The product of its digits is 960, while the sum is 27.

The square root of 121161852 is about 11007.3544505481. The cubic root of 121161852 is about 494.8291788905.

The spelling of 121161852 in words is "one hundred twenty-one million, one hundred sixty-one thousand, eight hundred fifty-two".