1224536121 has 6 divisors (see below), whose sum is σ = 1768774410. Its totient is φ = 816357408.

The previous prime is 1224536113. The next prime is 1224536147. The reversal of 1224536121 is 1216354221.

1224536121 is a `hidden beast` number, since 1 + 2 + 2 + 4 + 536 + 121 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1213546896 + 10989225 = 34836^2 + 3315^2 .

It is not a de Polignac number, because 1224536121 - 2³ = 1224536113 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1224536191) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 68029776 + ... + 68029793.

It is an arithmetic number, because the mean of its divisors is an integer number (294795735).

Almost surely, 2^1224536121 is an apocalyptic number.

It is an amenable number.

1224536121 is a deficient number, since it is larger than the sum of its proper divisors (544238289).

1224536121 is a wasteful number, since it uses less digits than its factorization.

1224536121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136059575 (or 136059572 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 1224536121 is about 34993.3725296662. The cubic root of 1224536121 is about 1069.8524037251.

The spelling of 1224536121 in words is "one billion, two hundred twenty-four million, five hundred thirty-six thousand, one hundred twenty-one".