1211202223 has 16 divisors (see below), whose sum is σ = 1523934720. Its totient is φ = 935128800.

The previous prime is 1211202143. The next prime is 1211202227. The reversal of 1211202223 is 3222021121.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1211202223 - 2⁹ = 1211201711 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1211202197 and 1211202206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1211202227) 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, 63763 + ... + 80548.

It is an arithmetic number, because the mean of its divisors is an integer number (95245920).

Almost surely, 2^1211202223 is an apocalyptic number.

1211202223 is a deficient number, since it is larger than the sum of its proper divisors (312732497).

1211202223 is a wasteful number, since it uses less digits than its factorization.

1211202223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144438.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 1211202223 is about 34802.3307121808. The cubic root of 1211202223 is about 1065.9550377215.

Adding to 1211202223 its reverse (3222021121), we get a palindrome (4433223344).

The spelling of 1211202223 in words is "one billion, two hundred eleven million, two hundred two thousand, two hundred twenty-three".