1311223210200 has 96 divisors (see below), whose sum is σ = 4516435520400. Its totient is φ = 349659521280.

The previous prime is 1311223210189. The next prime is 1311223210211. The reversal of 1311223210200 is 20123221131.

1311223210200 is a `hidden beast` number, since 1 + 31 + 1 + 223 + 210 + 200 = 666.

It is an interprime number because it is at equal distance from previous prime (1311223210189) and next prime (1311223210211).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 121404157 + ... + 121414956.

Almost surely, 2^{1311223210200} is an apocalyptic number.

1311223210200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1311223210200 is an abundant number, since it is smaller than the sum of its proper divisors (3205212310200).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1311223210200 is a wasteful number, since it uses less digits than its factorization.

1311223210200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242819138 (or 242819123 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 1311223210200 its reverse (20123221131), we get a palindrome (1331346431331).

The spelling of 1311223210200 in words is "one trillion, three hundred eleven billion, two hundred twenty-three million, two hundred ten thousand, two hundred".