1121222221203 has 12 divisors (see below), whose sum is σ = 1739038547400. Its totient is φ = 640698412032.

The previous prime is 1121222221193. The next prime is 1121222221243. The reversal of 1121222221203 is 3021222221211.

It is not a de Polignac number, because 1121222221203 - 2⁹ = 1121222220691 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 1121222221203.

It is not an unprimeable number, because it can be changed into a prime (1121222221243) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3813680878 + ... + 3813681171.

It is an arithmetic number, because the mean of its divisors is an integer number (144919878950).

Almost surely, 2^{1121222221203} is an apocalyptic number.

1121222221203 is a deficient number, since it is larger than the sum of its proper divisors (617816326197).

1121222221203 is an equidigital number, since it uses as much as digits as its factorization.

1121222221203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7627362066 (or 7627362059 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 1121222221203 its reverse (3021222221211), we get a palindrome (4142444442414).

The spelling of 1121222221203 in words is "one trillion, one hundred twenty-one billion, two hundred twenty-two million, two hundred twenty-one thousand, two hundred three".