1220212112203 has 4 divisors (see below), whose sum is σ = 1394528128240. Its totient is φ = 1045896096168.

The previous prime is 1220212112201. The next prime is 1220212112221. The reversal of 1220212112203 is 3022112120221.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1220212112203 - 2¹ = 1220212112201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1220212112201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 87158008008 + ... + 87158008021.

It is an arithmetic number, because the mean of its divisors is an integer number (348632032060).

Almost surely, 2^{1220212112203} is an apocalyptic number.

1220212112203 is a deficient number, since it is larger than the sum of its proper divisors (174316016037).

1220212112203 is an equidigital number, since it uses as much as digits as its factorization.

1220212112203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174316016036.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 1220212112203 its reverse (3022112120221), we get a palindrome (4242324232424).

The spelling of 1220212112203 in words is "one trillion, two hundred twenty billion, two hundred twelve million, one hundred twelve thousand, two hundred three".