1221240232203 has 8 divisors (see below), whose sum is σ = 1628325441600. Its totient is φ = 814157588808.

The previous prime is 1221240232187. The next prime is 1221240232229. The reversal of 1221240232203 is 3022320421221.

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

It is not a de Polignac number, because 1221240232203 - 2⁴ = 1221240232187 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1221240232253) 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, 1370508 + ... + 2078646.

It is an arithmetic number, because the mean of its divisors is an integer number (203540680200).

Almost surely, 2^{1221240232203} is an apocalyptic number.

1221240232203 is a deficient number, since it is larger than the sum of its proper divisors (407085209397).

1221240232203 is an equidigital number, since it uses as much as digits as its factorization.

1221240232203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1283001.

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 1221240232203 its reverse (3022320421221), we get a palindrome (4243560653424).

The spelling of 1221240232203 in words is "one trillion, two hundred twenty-one billion, two hundred forty million, two hundred thirty-two thousand, two hundred three".