1211201120223 has 32 divisors (see below), whose sum is σ = 1922814028800. Its totient is φ = 750813049728.

The previous prime is 1211201120203. The next prime is 1211201120237. The reversal of 1211201120223 is 3220211021121.

1211201120223 is a `hidden beast` number, since 121 + 1 + 201 + 120 + 223 = 666.

It is not a de Polignac number, because 1211201120223 - 2⁸ = 1211201119967 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1211201120196 and 1211201120205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1211201120203) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15858183 + ... + 15934376.

It is an arithmetic number, because the mean of its divisors is an integer number (60087938400).

Almost surely, 2^{1211201120223} is an apocalyptic number.

1211201120223 is a deficient number, since it is larger than the sum of its proper divisors (711612908577).

1211201120223 is a wasteful number, since it uses less digits than its factorization.

1211201120223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31792668 (or 31792662 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 1211201120223 its reverse (3220211021121), we get a palindrome (4431412141344).

The spelling of 1211201120223 in words is "one trillion, two hundred eleven billion, two hundred one million, one hundred twenty thousand, two hundred twenty-three".