1211123333212 has 24 divisors (see below), whose sum is σ = 2282574870576. Its totient is φ = 558962072448.

The previous prime is 1211123333201. The next prime is 1211123333227. The reversal of 1211123333212 is 2123333211121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1338168 + ... + 2052544.

It is an arithmetic number, because the mean of its divisors is an integer number (95107286274).

Almost surely, 2^{1211123333212} is an apocalyptic number.

It is an amenable number.

1211123333212 is a deficient number, since it is larger than the sum of its proper divisors (1071451537364).

1211123333212 is a wasteful number, since it uses less digits than its factorization.

1211123333212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 746997 (or 746995 counting only the distinct ones).

The product of its digits is 1296, while the sum is 25.

Adding to 1211123333212 its reverse (2123333211121), we get a palindrome (3334456544333).

The spelling of 1211123333212 in words is "one trillion, two hundred eleven billion, one hundred twenty-three million, three hundred thirty-three thousand, two hundred twelve".