121612533 has 16 divisors (see below), whose sum is σ = 186777600. Its totient is φ = 68944176.

The previous prime is 121612501. The next prime is 121612553. The reversal of 121612533 is 335216121.

It is not a de Polignac number, because 121612533 - 2⁵ = 121612501 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121612553) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20133 + ... + 25466.

It is an arithmetic number, because the mean of its divisors is an integer number (11673600).

Almost surely, 2^121612533 is an apocalyptic number.

It is an amenable number.

121612533 is a deficient number, since it is larger than the sum of its proper divisors (65165067).

121612533 is a wasteful number, since it uses less digits than its factorization.

121612533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45736.

The product of its digits is 1080, while the sum is 24.

The square root of 121612533 is about 11027.8072616454. The cubic root of 121612533 is about 495.4419519929.

Adding to 121612533 its reverse (335216121), we get a palindrome (456828654).

The spelling of 121612533 in words is "one hundred twenty-one million, six hundred twelve thousand, five hundred thirty-three".