1232200121 has 16 divisors (see below), whose sum is σ = 1284699648. Its totient is φ = 1180569600.

The previous prime is 1232200117. The next prime is 1232200139. The reversal of 1232200121 is 1210022321.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1232200121 - 2² = 1232200117 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1232200096 and 1232200105.

It is not an unprimeable number, because it can be changed into a prime (1232200181) 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, 1680671 + ... + 1681403.

It is an arithmetic number, because the mean of its divisors is an integer number (80293728).

Almost surely, 2^1232200121 is an apocalyptic number.

It is an amenable number.

1232200121 is a deficient number, since it is larger than the sum of its proper divisors (52499527).

1232200121 is a wasteful number, since it uses less digits than its factorization.

1232200121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1232.

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

The square root of 1232200121 is about 35102.7081718776. The cubic root of 1232200121 is about 1072.0797239777.

Adding to 1232200121 its reverse (1210022321), we get a palindrome (2442222442).

It can be divided in two parts, 1232200 and 121, that added together give a palindrome (1232321).

The spelling of 1232200121 in words is "one billion, two hundred thirty-two million, two hundred thousand, one hundred twenty-one".