121143632 has 40 divisors (see below), whose sum is σ = 249633576. Its totient is φ = 56754176.

The previous prime is 121143623. The next prime is 121143641. The reversal of 121143632 is 236341121.

It is an interprime number because it is at equal distance from previous prime (121143623) and next prime (121143641).

It can be written as a sum of positive squares in 4 ways, for example, as 67502656 + 53640976 = 8216^2 + 7324^2 .

It is a super-3 number, since 3×121143632³ (a number of 25 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 121143598 and 121143607.

It is a congruent number.

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, 69038 + ... + 70770.

Almost surely, 2^121143632 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121143632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (124816788).

121143632 is an abundant number, since it is smaller than the sum of its proper divisors (128489944).

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

121143632 is a wasteful number, since it uses less digits than its factorization.

121143632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2015 (or 2009 counting only the distinct ones).

The product of its digits is 864, while the sum is 23.

The square root of 121143632 is about 11006.5267909545. The cubic root of 121143632 is about 494.8043739444.

Adding to 121143632 its reverse (236341121), we get a palindrome (357484753).

The spelling of 121143632 in words is "one hundred twenty-one million, one hundred forty-three thousand, six hundred thirty-two".