1211203202223 has 16 divisors (see below), whose sum is σ = 1845658414080. Its totient is φ = 692110325856.

The previous prime is 1211203202141. The next prime is 1211203202257. The reversal of 1211203202223 is 3222023021121.

It is not a de Polignac number, because 1211203202223 - 2¹³ = 1211203194031 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 1211203202223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1211203202623) 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, 4455373 + ... + 4719401.

It is an arithmetic number, because the mean of its divisors is an integer number (115353650880).

Almost surely, 2^{1211203202223} is an apocalyptic number.

1211203202223 is a deficient number, since it is larger than the sum of its proper divisors (634455211857).

1211203202223 is a wasteful number, since it uses less digits than its factorization.

1211203202223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 482486.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 1211203202223 its reverse (3222023021121), we get a palindrome (4433226223344).

The spelling of 1211203202223 in words is "one trillion, two hundred eleven billion, two hundred three million, two hundred two thousand, two hundred twenty-three".