1232012021 has 8 divisors (see below), whose sum is σ = 1249953240. Its totient is φ = 1214099712.

The previous prime is 1232012011. The next prime is 1232012053. The reversal of 1232012021 is 1202102321.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 670084996 + 561927025 = 25886^2 + 23705^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 1232012021 - 2¹⁴ = 1231995637 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1232011987 and 1232012005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1232012011) 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, 87551 + ... + 100643.

It is an arithmetic number, because the mean of its divisors is an integer number (156244155).

Almost surely, 2^1232012021 is an apocalyptic number.

It is an amenable number.

1232012021 is a deficient number, since it is larger than the sum of its proper divisors (17941219).

1232012021 is a wasteful number, since it uses less digits than its factorization.

1232012021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14455.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 1232012021 is about 35100.0287891620. The cubic root of 1232012021 is about 1072.0251688626.

Adding to 1232012021 its reverse (1202102321), we get a palindrome (2434114342).

The spelling of 1232012021 in words is "one billion, two hundred thirty-two million, twelve thousand, twenty-one".