121161624 has 16 divisors (see below), whose sum is σ = 302904120. Its totient is φ = 40387200.

The previous prime is 121161619. The next prime is 121161637. The reversal of 121161624 is 426161121.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24), and also a Moran number because the ratio is a prime number: 5048401 = 121161624 / (1 + 2 + 1 + 1 + 6 + 1 + 6 + 2 + 4).

It is a nude number because it is divisible by every one of its digits.

It is a zygodrome in base 2.

It is a junction number, because it is equal to n+sod(n) for n = 121161594 and 121161603.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2524177 + ... + 2524224.

Almost surely, 2^121161624 is an apocalyptic number.

It is an amenable number.

121161624 is an abundant number, since it is smaller than the sum of its proper divisors (181742496).

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

121161624 is a wasteful number, since it uses less digits than its factorization.

121161624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5048410 (or 5048406 counting only the distinct ones).

The product of its digits is 576, while the sum is 24.

The square root of 121161624 is about 11007.3440938312. The cubic root of 121161624 is about 494.8288685036.

It can be divided in two parts, 1211 and 61624, that added together give a triangular number (62835 = T₃₅₄).

The spelling of 121161624 in words is "one hundred twenty-one million, one hundred sixty-one thousand, six hundred twenty-four".