121015633 has 8 divisors (see below), whose sum is σ = 122544128. Its totient is φ = 119496384.

The previous prime is 121015621. The next prime is 121015663. The reversal of 121015633 is 336510121.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121015633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121015613) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26185 + ... + 30457.

It is an arithmetic number, because the mean of its divisors is an integer number (15318016).

Almost surely, 2^121015633 is an apocalyptic number.

It is an amenable number.

121015633 is a deficient number, since it is larger than the sum of its proper divisors (1528495).

121015633 is a wasteful number, since it uses less digits than its factorization.

121015633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4623.

The product of its (nonzero) digits is 540, while the sum is 22.

The square root of 121015633 is about 11000.7105679588. The cubic root of 121015633 is about 494.6300442850.

Adding to 121015633 its reverse (336510121), we get a palindrome (457525754).

The spelling of 121015633 in words is "one hundred twenty-one million, fifteen thousand, six hundred thirty-three".